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Submission #838249

# Submission time Handle Problem Language Result Execution time Memory
838249 2023-08-26T12:05:46 Z manizare Street Lamps (APIO19_street_lamps) C++14
20 / 100
 420 ms 9904 KB 
#include <bits/stdc++.h> 

#define pb push_back 
#define F first 
#define S second 
#define all(a) a.begin(),a.end() 
#define pii pair<int,int>
using namespace std ;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int maxn = 1000 + 10 ,  inf = 1e9+10  ;
int pre[maxn][maxn]  ; 
signed main(){
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  int n , q;
  cin >>n >> q;
  string s;
  cin >> s; 
  s=  "0" + s;
  for(int j = 1; j  <= n ; j++){
    pre[0][j] = pre[0][j-1] + (s[j] == '0'); 
  }
  for(int i = 1; i <= q ; i++){
    string a ;
    cin >> a; 
    if(a[0] == 't'){
        int x;
        cin >> x; 
        if(s[x] == '0')s[x] = '1' ;
        else s[x] = '0' ; 
    }
    for(int j = 1; j <= n;  j++){
        pre[i][j] = pre[i][j-1] + (s[j] == '0') ;  
    }
    if(a[0] == 'q'){
        int r , l; 
        cin >> l >> r ; 
        r--;
        int ans = 0 ;
        for(int j = 0;  j < i ;j++){
            if(pre[j][r] == pre[j][l-1]){
                ans ++ ;
            }
        }
        cout <<ans << "\n"; 
    }
  }
}
/*
 5 7
11011
query 1 2
query 1 2
query 1 6
query 3 4
toggle 3
query 3 4
query 1 6

*/

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 724 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 7 ms 8552 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4180 KB Output is correct
2 Correct 4 ms 4284 KB Output is correct
3 Correct 6 ms 4316 KB Output is correct
4 Correct 5 ms 4308 KB Output is correct
5 Runtime error 420 ms 9888 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4180 KB Output is correct
2 Correct 5 ms 4248 KB Output is correct
3 Correct 5 ms 4308 KB Output is correct
4 Correct 4 ms 4308 KB Output is correct
5 Runtime error 419 ms 9904 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 724 KB Output is correct
8 Runtime error 7 ms 8552 KB Execution killed with signal 11
9 Halted 0 ms 0 KB -