oj.uz

Submission #961091

# Submission time Handle Problem Language Result Execution time Memory
961091 2024-04-11T13:41:21 Z penguin133 Election (BOI18_election) C++17
28 / 100
 3000 ms 3300 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

char A[300005];
int n, q, died[300005];

void solve(){
	cin >> n;
	for(int i = 1; i <= n; i++)cin >> A[i];
	cin >> q;
	while(q--){
		int l, r; cin >> l >> r;
		int cnt = 0, cur = 0;
		for(int i = l; i <= r; i++){
			cnt += (A[i] == 'C' ? 1 : -1);
			if(cnt < 0){
				cnt++;
				cur++;
				died[i] = 1;
			}
		}
		cnt = 0;
		for(int i = r; i >= l; i--){
			if(died[i]){
				died[i] = 0;
				continue;
			}
			cnt += (A[i] == 'C' ? 1 : -1);
			if(cnt < 0){
				cnt++;
				cur++;
			}
		}
		cout << cur << '\n';
	}
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message

election.cpp:48:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   48 | main(){
      | ^~~~

Subtask #1
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 7 ms 348 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 5 ms 476 KB Output is correct
5 Correct 5 ms 504 KB Output is correct

Subtask #2
0 / 54.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 7 ms 348 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 5 ms 476 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Execution timed out 3073 ms 3300 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 7 ms 348 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 5 ms 476 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Execution timed out 3073 ms 3300 KB Time limit exceeded
7 Halted 0 ms 0 KB -