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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.         ios_base::sync_with_stdio(false);
  6.     cin.tie(nullptr);
  7. long long  c;
  8. cin>>c;
  9. string s;
  10. cin>>s;
  11. long long  counter=1;
  12. long long  sum=1;
  13. bool f=1;
  14. for(int i=0;i<s.size();i++)
  15. {
  16.     if(s[i]=='0')
  17.     {
  18.         f=0;
  19.     }
  20. }
  21. if(f)
  22. {
  23.     cout<<'1';
  24. }
  25. else{
  26. for(int i=0;i<s.size();i++)
  27. {
  28.     if(s[i]=='0')
  29.     {
  30.                 if(sum==c)
  31.         {
  32.             break;
  33.         }
  34.         counter++;
  35.         sum=max(sum,counter);
  36.         if(sum==c)
  37.         {
  38.             break;
  39.         }
  40.  
  41.     }
  42.         if(s[i]=='1')
  43.     {
  44.         counter--;
  45.         counter=max(counter, 1LL);
  46.     }
  47.     sum=max(sum,counter);
  48. }
  49. cout<<sum;}
  50.     return 0;
  51. }
Success #stdin #stdout 0.01s 5276KB
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https://ideone.com/GQP2CD
language:
C++ (gcc 8.3)
created:
7 days ago
visibility:
public

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