Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.

No tag edit access

A. Mind the Gap

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputThese days Arkady works as an air traffic controller at a large airport. He controls a runway which is usually used for landings only. Thus, he has a schedule of planes that are landing in the nearest future, each landing lasts $$$1$$$ minute.

He was asked to insert one takeoff in the schedule. The takeoff takes $$$1$$$ minute itself, but for safety reasons there should be a time space between the takeoff and any landing of at least $$$s$$$ minutes from both sides.

Find the earliest time when Arkady can insert the takeoff.

Input

The first line of input contains two integers $$$n$$$ and $$$s$$$ ($$$1 \le n \le 100$$$, $$$1 \le s \le 60$$$) — the number of landings on the schedule and the minimum allowed time (in minutes) between a landing and a takeoff.

Each of next $$$n$$$ lines contains two integers $$$h$$$ and $$$m$$$ ($$$0 \le h \le 23$$$, $$$0 \le m \le 59$$$) — the time, in hours and minutes, when a plane will land, starting from current moment (i. e. the current time is $$$0$$$ $$$0$$$). These times are given in increasing order.

Output

Print two integers $$$h$$$ and $$$m$$$ — the hour and the minute from the current moment of the earliest time Arkady can insert the takeoff.

Examples

Input

6 60

0 0

1 20

3 21

5 0

19 30

23 40

Output

6 1

Input

16 50

0 30

1 20

3 0

4 30

6 10

7 50

9 30

11 10

12 50

14 30

16 10

17 50

19 30

21 10

22 50

23 59

Output

24 50

Input

3 17

0 30

1 0

12 0

Output

0 0

Note

In the first example note that there is not enough time between 1:20 and 3:21, because each landing and the takeoff take one minute.

In the second example there is no gaps in the schedule, so Arkady can only add takeoff after all landings. Note that it is possible that one should wait more than $$$24$$$ hours to insert the takeoff.

In the third example Arkady can insert the takeoff even between the first landing.

Codeforces (c) Copyright 2010-2020 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: Mar/31/2020 03:06:22 (f1).

Desktop version, switch to mobile version.

Supported by

User lists

Name |
---|