oj.uz

Submission #565639

# Submission time Handle Problem Language Result Execution time Memory
565639 2022-05-21T07:57:37 Z haxorman Election (BOI18_election) C++14
28 / 100
 3000 ms 640 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
 
const int mxN = 5e5 + 7;

int32_t main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

	int n;
	string s;
	cin >> n >> s;

	int q;
	cin >> q;
	while (q--) {
		int l, r;
		cin >> l >> r;
		--l, --r;
		
		int ans = 0, c = 0, t = 0;
		set<int> used;
		for (int i = l; i <= r; ++i) {
			if (s[i] == 'C') {
				++c;
			}
			else {
				++t;
			}

			if (t > c) {
				t--;
				++ans;
				used.insert(i);
			}
		}

		c = t = 0;
		for (int i = r; i >= l; --i) {
			if (s[i] == 'C') {
				++c;
			}
			else if (!used.count(i)) {
				++t;
			}

			if (t > c) {
				t--;
				++ans;
			}
		}
		cout << ans << "\n";
	}
}

Subtask #1
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 212 KB Output is correct
2 Correct 17 ms 212 KB Output is correct
3 Correct 10 ms 324 KB Output is correct
4 Correct 41 ms 340 KB Output is correct
5 Correct 16 ms 328 KB Output is correct

Subtask #2
0 / 54.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 212 KB Output is correct
2 Correct 17 ms 212 KB Output is correct
3 Correct 10 ms 324 KB Output is correct
4 Correct 41 ms 340 KB Output is correct
5 Correct 16 ms 328 KB Output is correct
6 Execution timed out 3063 ms 640 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 212 KB Output is correct
2 Correct 17 ms 212 KB Output is correct
3 Correct 10 ms 324 KB Output is correct
4 Correct 41 ms 340 KB Output is correct
5 Correct 16 ms 328 KB Output is correct
6 Execution timed out 3063 ms 640 KB Time limit exceeded
7 Halted 0 ms 0 KB -