I was trying to solve 732D and after struggling with an optimal algorithm for sometime, I looked into the ↵
accepted solutions and saw that many ACs were as simple as the following. ↵
↵
http://codeforces.com/contest/732/submission/21571861↵
↵
~~~~~↵
#include<bits/stdc++.h> ↵
using namespace std; ↵
int main() ↵
{ ↵
int n,m; ↵
cin>>n>>m; ↵
int arr[n+1]; ↵
for(int i=1;i<=n;i++)cin>>arr[i]; ↵
int sum=m,x; ↵
for(int i=0;i<m;i++){cin>>x; sum+=x;} ↵
↵
for(int i=sum;i<=n;i++)if(arr[i]){cout<<i; return 0;} ↵
cout<<-1; ↵
} ↵
~~~~~↵
↵
I think they will fail on a simple testcase as — ↵
↵
~~~~~↵
8 2↵
1 1 1 1 1 1 1 2↵
1 1↵
~~~~~↵
↵
_( The ans should be 8 )_↵
↵
Am I understanding the question incorrectly ?↵
↵
↵
**UPDATE**↵
It seems like after the contest, some test cases might have been updated/added covering the case above. ↵
accepted solutions and saw that many ACs were as simple as the following. ↵
↵
http://codeforces.com/contest/732/submission/21571861↵
↵
~~~~~↵
#include<bits/stdc++.h> ↵
using namespace std; ↵
int main() ↵
{ ↵
int n,m; ↵
cin>>n>>m; ↵
int arr[n+1]; ↵
for(int i=1;i<=n;i++)cin>>arr[i]; ↵
int sum=m,x; ↵
for(int i=0;i<m;i++){cin>>x; sum+=x;} ↵
↵
for(int i=sum;i<=n;i++)if(arr[i]){cout<<i; return 0;} ↵
cout<<-1; ↵
} ↵
~~~~~↵
↵
I think they will fail on a simple testcase as — ↵
↵
~~~~~↵
8 2↵
1 1 1 1 1 1 1 2↵
1 1↵
~~~~~↵
↵
_( The ans should be 8 )_↵
↵
Am I understanding the question incorrectly ?↵
↵
↵
**UPDATE**↵
It seems like after the contest, some test cases might have been updated/added covering the case above. ↵
