oj.uz

Submission #1044187

# Submission time Handle Problem Language Result Execution time Memory
1044187 2024-08-05T07:55:08 Z alex_2008 COVID tests (CEOI24_covid) C++14
10 / 100
 5 ms 344 KB 
#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
#include <map>
#include <queue>
#include <stack>
typedef long long ll;
using namespace std;
const int N = 2e5 + 10;
int n, t;
long double p;
bool ch(int l, int r) {
	cout << "? " << l << " " << r << "\n";
	string s = string(n, '0');
	for (int i = l - 1; i < r; i++) {
		s[i] = '1';
	}
	cout << "Q " << s << endl;
	char x;
	cin >> x;
	if (x == 'P') return true;
	return false;
}
int main() {
	cin >> n >> p >> t;
	if (t == 1) {
		string ans = string(n, '0');
		for (int i = 1; i <= n; i++) {
			cout << "Q ";
			string s = string(n, '0');
			s[i - 1] = '1';
			cout << s << endl;
			char x;
			cin >> x;
			if (x == 'P') ans[i - 1] = '1';
		}
		cout << "A " << ans << endl;
		char x;
		cin >> x;
		return 0;
	}
	if (p <= 0.01) {
		while (t--) {
			string answ = string(n, '0');
			int last = 0;
			while (1) {
				if (!ch(last + 1, n)) {
					break;
				}
				int l = last + 1, r = n - 1, ans = last;
				while (l <= r) {
					int mid = (l + r) / 2;
					if (!ch(last + 1, mid)) {
						ans = mid;
						l = mid + 1;
					}
					else r = mid - 1;
				}
				answ[ans] = '1';
				last = ans + 1;
			}
			cout << "A " << answ << endl;
			char x;
			cin >> x;
		}
		return 0;
	}
	else {
		while (t--) {
			string answ = string(n, '0');
			int last = 0;
			while (1) {
				int l = last + 1, r = n, ans = -1;
				while (l <= r) {
					int mid = (l + r) / 2;
					if (!ch(last + 1, mid)) {
						ans = mid;
						l = mid + 1;
					}
					else r = mid - 1;
				}
				if (ans == n) break;
				if (ans != -1) {
					answ[ans] = '1';
					last = ans + 1;
				}
				else {
					answ[last] = '1';
					last++;
				}
			}
			cout << "A " << answ << endl;
			char x;
			cin >> x;
		}
		return 0;
	}
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 344 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 4 ms 344 KB Output is correct
7 Correct 3 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 4 ms 344 KB Output is correct
11 Correct 4 ms 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 4 ms 344 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 4 ms 344 KB Output is correct
16 Correct 3 ms 344 KB Output is correct
17 Correct 4 ms 344 KB Output is correct

Subtask #2
0.0 / 90.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 344 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -