General
 
 
# Author Problem Lang Verdict Time Memory Sent Judged  
53560074 Practice:
mnbvmar
1150B - 29 Python 3 Accepted 109 ms 36 KB 2019-04-30 11:57:14 2019-04-30 11:57:14
 
 
→ Source
vectors = [(0, 0), (1, -1), (1, 0), (1, 1), (2, 0)]

N = int(input())
board = [list(input()) for row_id in range(N)]

for row in range(N - 2):
    for col in range(1, N - 1):
        can_place = all(board[row + dr][col + dc] == '.' for (dr, dc) in vectors)
        if can_place:
            for (dr, dc) in vectors:
                board[row + dr][col + dc] = '#'

has_dots = any(row.count('.') for row in board)
print('NO' if has_dots else 'YES')
 
 
1
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
3
#.#
...
#.#
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
2
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
4
##.#
#...
####
##.#
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
3
Time: 77 ms, memory: 32 KB
Verdict: OK
Input
5
#.###
....#
#....
###.#
#####
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
4
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
5
#.###
....#
#....
....#
#..##
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
5
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
6
#.##.#
......
#.##.#
......
##.###
#...##
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
6
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
3
###
#.#
###
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
7
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
21
#########.###.#####.#
#.####.#........##...
....#............#..#
#....#....#..##.#...#
#.#..##..#....####..#
.............###.#...
#.##.##..#.###......#
###.##.....##.......#
##...........#..##.##
#...##.###.#......###
#....###.##..##.....#
##....#.......##.....
#.##.##..##.........#
....##....###.#.....#
#....##....##......##
##..#.###.#........##
#......#.#.....##..##
##..#.....#.#...#...#
#........#.##..##..##
....##.##......#...##
#.########.##.###.###
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
8
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
21
##.######.###.#####.#
#...##.#.......#.#...
##..#...#.....#.....#
#....#..###.###.....#
....#....####....#.##
#..#....##.#....#.###
#...#.###...#.##....#
#..#.##.##.##.##.....
..........##......#.#
#.##.#......#.#..##.#
#.##.............#...
..........#.....##..#
#.#..###..###.##....#
#....##....##.#.....#
....#......#...#.#...
#.#.........#..##.#.#
#..........##.......#
....#....#.##..##....
#.#.##.#.......##.#.#
##...##....##.##...##
###.####.########.###
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
9
Time: 109 ms, memory: 0 KB
Verdict: OK
Input
50
#.##.##.###.###.##.###.########.######.##.####.###
.........#..........#...##.###...#.##......#.....#
#.#..#..#.#.....#..#.#.##....##......#.##.........
##.........##..#......#.##....#.......##.....##..#
#.#.##..#.##......##.#...#.#.###.###.#.....###...#
....##...##.......#.##..#....###.###.....###.##..#
#....#..##.#.###........##........#....#.##.......
#.#.....#...#.##....##..##.#......##.##....#.....#
........##.....#..##.#......##.#...####......#..##
#.#..#...#....#...#.....##.##.##..##.#....
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
10
Time: 93 ms, memory: 4 KB
Verdict: OK
Input
49
###.###.#####.##.##########.###.#####.##.##.##.##
##...#....##......#.###.##...#....##............#
###.#.#....#..##.#........#.#.#.....#.#..##....##
###....##.#....####........#....#....#...#.#...##
#.....#.####....#.##..#.#.#.#.....#.#.#.#...#..##
....##...#.##..#.............#.....#...###.#....#
#.#.###.#.......#.#..##.........#..##.##.##.....#
##....##.#..#....#...##.#......##...###...##.#...
###..........#..##..#........##.##.#.###.#.##.#.#
#.###..#..#.....#........#.#.#...##....##......#...
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
11
Time: 93 ms, memory: 4 KB
Verdict: OK
Input
50
#####.####.####.####.####.####.####.####.####.####
##.#....#....#....#....#....#....#....#....#....##
#................................................#
#...............................................##
.................................................#
#.................................................
##...............................................#
#................................................#
#...............................................##
..........................................
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
12
Time: 93 ms, memory: 4 KB
Verdict: OK
Input
16
#####.####.#####
##.##...##...###
##....#....#...#
#..#....#....#..
#....#....#....#
#.#....#....#..#
##..#....#....##
##....#....#...#
#..#....#....#..
#....#....#....#
#.#....#....#..#
##..#....#....##
##....#....#..##
##.#..#.#..#.###
####.####.######
################
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
13
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
23
#####.####.####.####.##
##.#.#..#.#..#.#..#.#.#
#.#....#....#....#...##
#...#....#....#....#..#
.#....#....#....#....#.
#..#....#....#....#...#
##...#....#....#....#.#
#.#....#....#....#...##
#...#....#....#....#..#
.#....#....#....#....#.
#..#....#....#....#...#
##...#....#....#....#.#
#.#....#....#....#...##
#...#....#....#....#..#
.#....#....#....#....#.
#..#....#....#....#...#
##...#....#....#....#.#
#.#....#....#....#...##
#...#....#....#....#..#
.#....#....#....#....#.
#..#......
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
14
Time: 93 ms, memory: 8 KB
Verdict: OK
Input
25
#####.####.####.####.####
##.#..#.#..#.#..#.#..#.##
#..#....#....#....#....##
#....#....#....#....#..##
..#....#....#....#....#.#
#...#....#....#....#....#
##....#....#....#....#..#
#..#....#....#....#....##
#....#....#....#....#..##
..#....#....#....#....#.#
#...#....#....#....#....#
##....#....#....#....#..#
#..#....#....#....#....##
#....#....#....#....#..##
..#....#....#....#....#.#
#...#....#....#....#....#
##....#....#....#....#..#
#..#....#....#....#....##
#....#....#....#....#...
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
15
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
20
#####.####.####.####
##.#....#....#....##
#....#....#....#...#
#.#....#....#....###
....#....#....#....#
##....#....#....#...
##.#....#....#....##
#....#....#....#...#
#.#....#....#....###
....#....#....#....#
##....#....#....#...
##.#....#....#....##
#....#....#....#...#
#.#....#....#....###
....#....#....#....#
##....#....#....#...
##.#....#....#...###
#...##...##...######
####################
####################
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
16
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
49
##.###.####.##.#####.####.##.####.####.###.###.##
#...#....#......##....##......##...#............#
##..##....#..#.#.....#.##.#..#.##.#............##
##....##..#.........#....#......#.##.###.##..####
###....#.........#...#....#..#.....##.##.#...##.#
##.##.##.....#..##..##.#.#........#.......#.##...
#...##....#.#.......#...#....##.#......#..###.#.#
#..#.###........#..##..##..#.###....#..........##
.......###..#.#....#...#.......##.##.#.#......###
#..#....##...#....##..#.#..#....#.#.......#.###....
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
17
Time: 108 ms, memory: 0 KB
Verdict: OK
Input
49
####.###.####.###.###.##.##.###.###.####.####.###
###...#....#...#.................#...#....#....##
#.##..##....#.##......##.#......##..#....#....###
...#...##..###......###.#.....###...#..#.##..##.#
#..##.#....#........##........##.#.#.............
#....#....#....#.#.#.##......##...#.#.##......#.#
#.......###..##...#...##.....##..#...###.#.....##
.........#...##..###.##...#..#...#..##........#.#
#....#....#.##...#.##.##..#.....#...#....##.#....
#.#..##..###.##.#..........#....#..##..##.##.......
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
18
Time: 92 ms, memory: 0 KB
Verdict: OK
Input
3
...
...
...
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
19
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
7
#.....#
.......
.......
.......
.......
.......
#.....#
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
20
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
49
##.##.###.##.###.###.##.############.##.####.####
#......#......#...#......#.###.###.......##...###
##..#.##..##.###.##..#..#...#.........#..##..##.#
##...##....###.##........#.#.#...............#...
###..###....#.......#..........#.#....##.#..###.#
#.#...##.#.##..#..#....#.........##.###.#....##.#
...#.##...##..........#.##.##......##....#.......
#.#.##.#..###..#.##..#....##............####.#..#
##.........##...##....#....#.....#..#..##.###...#
##..##..#..##..##....#.##.#.....#..........#.#.#...
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
21
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
20
#.##.##.##.##.##.###
...................#
#..#..#..#..#..#....
#................#.#
#..#..#..#..#......#
....................
#..#..#..#..#......#
#.............#....#
#..#..#..#......#..#
....................
#..#..#..#......#..#
#..........#.......#
#..#..#......#..#..#
....................
#..#..#......#..#..#
#.......#..........#
#..#......#..#..#..#
....................
#.##....#.##.##.##.#
######.#############
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
22
Time: 78 ms, memory: 4 KB
Verdict: OK
Input
50
#.###.##.##.##.##.##.##.###.##.##.##.##.###.##.###
.................................................#
#......#..#..#..#..#..#......#..#..#.#.......#....
#.#.....................#.#...............#...#..#
........#..#..#.#..#......##.#..##.........#.#...#
#..#........................#....##..#.#.....##..#
#........#..#......#.....................#........
#..#..#.......#......#...........#..#......#.....#
.......#..#............#.....................#..##
#.##........#..#..##....#.......#..#......
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
23
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
49
#.##.##.##.###.##.####.##.##.##.##.##.##.##.##.##
....................#...........................#
#..#..#..#......#......#..#..#..#..#..#..#..#..##
#..........#......#.............................#
#..#..#.............#..#..#..#..#..#..#..#..#....
...........#..#.#.............................#.#
#..#.#............#..#..#..#..#..#..#..#..#.....#
#.........#..#..............................#....
#.................#..#..#..#..#..#..#..#......#.#
.....#.#..#..#.....................................
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
24
Time: 93 ms, memory: 36 KB
Verdict: OK
Input
50
#####.####.####.####.####.####.####.####.#########
##.#....#....#....#....#....#....#....#....####.##
#............................................#...#
#...............................................##
.............#...................................#
#...........###...................................
##...........#...................................#
#................................................#
#...............................................##
...............................#..........
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
25
Time: 108 ms, memory: 0 KB
Verdict: OK
Input
49
#####.####.####.####.####.####.####.####.####.###
##.#....#....#....#....#....#....#....#...##....#
#........................................###.....
#...................................#.....#.....#
...................................###..........#
#...................#...............#..........##
###................###..........................#
####................#..................#.........
#.#...................................###.......#
.......................................#...........
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
26
Time: 108 ms, memory: 0 KB
Verdict: OK
Input
49
#####.####.####.####.####.####.####.####.####.###
##.##...##...##...##...##...##...##...##...##...#
##....#....#....#....#....#....#....#....#..#.#..
#..#....#....#....#....#....#....#....#....###..#
#....#....#..#.#....#....#....#....#....#...##..#
#.#....#....###..#....#....#..#.#..#.#....#....##
##..#....#...##....#....#....###..###..#....#...#
##....#....#....#..#.#....#...##...##....#....#..
#..#....#....#....###..#....#....#....#....#....#
#....#....#....#...##....#....#....#....#....#.....
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
27
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
50
#####.####.####.####.####.####.####.####.####.####
##.#.#..#.#..#.#..#.#..#.#..#.#..#.#..#.#..#.#..##
#.#....#....#....#....#....#....#....#....#....#.#
#...#....#....#....#....#....#....#....#....#...##
.#....#....#....#....#....#....#....#....#....#..#
#..#....#....#....#....#....#....#....#....#....#.
##...#....#....#....#....#....#....#....#....#...#
#.#....#....#....#....#....#....#....#....#.#..#.#
#...#....#....#....#....#....#....#....#...###..##
.#....#....#....#....#....#....#....#.....
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
28
Time: 109 ms, memory: 0 KB
Verdict: OK
Input
48
#####.####.####.####.#########.####.####.####.##
##.#..#.#..#.#..#.#..#.####.#..#.#..#.#..#.#..##
#..#....#....##...#....#.#..#....#....#....#..##
#....#....#..###....#....#....#....#....#....#.#
..#....#....#.#..#....#....#....#....#....#....#
#...#....#....##...#....#....#....#....#....#..#
##....#....#..###....#....#....#....#....#....##
#..#....#....#.#..#....#....##...#....#....#..##
#....#....#....#....#....#..###....#....#....#.#
..#....#....#....#....#....##...#....#....#....#
#...#.....
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
29
Time: 93 ms, memory: 4 KB
Verdict: OK
Input
49
#####.####.####.####.####.####.####.####.####.###
##.#....#....#....#....#....#....#....#....#....#
#....#....#....#....#....#....#....#....#....#...
#.#....#....#....#....#....#....#....#....#....##
....#....#....#....#....#....#....#....#....#...#
##....#....#....#....#....#....#....#....#....###
##.#....#....#....#....#....#....#....#....#....#
#....#....#....#....#....#....#....#....#....#...
#.#....#....#....#....#....#....#....#....#....##
....#....#....#....#....#...##...##...##....#......
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
30
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
50
######################.#########.#################
#######.##########.##...#######...####.#######.###
######...##.#####...##.#########.####...#####...##
#######.##...#####..##########.#######.#######.###
###########.######...########...#########.########
###################.##########.######.##...#######
##.##########################.######...##.#####.##
#...#######.################...###.##.#######....#
##.#######...########.###.###.###...########.....#
###########.########...#...#######.####...
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
31
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
50
########################################.#########
#####################.######.##########...########
####################...####...##########..########
###################.#.######.###########...#######
####.#############...####################.########
###...#############.#########.####################
####.##############.########...##.####.###########
##################...###.####.##...##...#######.##
########.#########..###...#.#####.####.#######...#
######....###.###...####.#...#.########...
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
32
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
50
##################################################
##################################################
##################################################
##################################################
##################################################
##################################################
##################################################
##################################################
##################################################
#######################################...
Participant's output
YES
Jury's answer
YES
Checker comment
ok answer is YES
 
 
33
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
50
##################################################
##################################################
##################################################
##################################################
##################################################
##################################################
##################################################
##################################################
##################################################
#######################################...
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
34
Time: 109 ms, memory: 0 KB
Verdict: OK
Input
50
..................................................
..................................................
..................................................
..................................................
..................................................
..................................................
..................................................
..................................................
..................................................
..........................................
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
35
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
50
#................................................#
..................................................
..................................................
..................................................
..................................................
..................................................
..................................................
..................................................
..................................................
..........................................
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
36
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
50
##.#####.####.###.#####.####.###.##.####.#######.#
#...##....#.........##....#..........#....###.#...
##..#................##....#.....#..#....##....#.#
#......#.....##.#.#.##.##..###.#....#..##.....##.#
.......#..#...##...##...#...#.#.............##....
#.###.#....#.##.#.##.#.#.#.#.....#........#.#....#
####.##.....#....#........##......#.##..##...#..##
##.......#................#.........#....##.##...#
#.....#.#.....#.....##.#...#.........#....##.##..#
##.#...#....###..#....##..#.##....###.#...
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
37
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
5
#####
.####
..###
.####
#####
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
38
Time: 93 ms, memory: 36 KB
Verdict: OK
Input
5
#####
#####
#####
####.
###..
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
39
Time: 93 ms, memory: 8 KB
Verdict: OK
Input
3
###
#.#
...
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
40
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
4
####
###.
##..
.##.
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
41
Time: 109 ms, memory: 0 KB
Verdict: OK
Input
3
##.
###
###
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
42
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
3
.##
..#
.##
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
43
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
3
..#
.##
###
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
44
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
3
###
##.
#..
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
45
Time: 61 ms, memory: 4 KB
Verdict: OK
Input
3
##.
#..
##.
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
46
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
3
.##
###
###
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
47
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
3
.#.
..#
.##
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
48
Time: 78 ms, memory: 0 KB
Verdict: OK
Input
3
..#
...
#.#
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
49
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
4
#..#
....
#..#
####
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
50
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
3
###
###
##.
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
51
Time: 93 ms, memory: 0 KB
Verdict: OK
Input
3
...
#.#
###
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
52
Time: 109 ms, memory: 0 KB
Verdict: OK
Input
17
#################
#################
#################
#################
#################
#################
#################
#################
#################
#################
#################
#################
#################
#################
#################
#################
##.##.##.##.##.##
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
53
Time: 92 ms, memory: 0 KB
Verdict: OK
Input
5
.....
.....
.....
.....
.....
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
54
Time: 78 ms, memory: 0 KB
Verdict: OK
Input
3
##.
#..
.#.
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
55
Time: 77 ms, memory: 0 KB
Verdict: OK
Input
5
#.#.#
##...
###.#
#####
#####
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
56
Time: 92 ms, memory: 0 KB
Verdict: OK
Input
4
####
####
####
##.#
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
57
Time: 109 ms, memory: 0 KB
Verdict: OK
Input
4
####
####
##.#
#...
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
58
Time: 77 ms, memory: 4 KB
Verdict: OK
Input
3
###
###
#.#
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO
 
 
59
Time: 93 ms, memory: 24 KB
Verdict: OK
Input
5
#####
#####
#####
#####
.....
Participant's output
NO
Jury's answer
NO
Checker comment
ok answer is NO