oj.uz

Submission #1058476

# Submission time Handle Problem Language Result Execution time Memory
1058476 2024-08-14T10:11:51 Z rainboy COVID tests (CEOI24_covid) C
56.6 / 100
 1223 ms 596 KB 
#include <stdio.h>
#include <string.h>

#define N	1000

int min(int a, int b) { return a < b ? a : b; }

int n, m; double p;

int query(int l, int r) {
	static char cc[N + 1], s[2];

	memset(cc, '0', n * sizeof *cc), memset(cc + l, '1', (r - l) * sizeof *cc), cc[n] = 0;
	printf("Q %s\n", cc), fflush(stdout);
	scanf("%s", s);
	return s[0] == 'P';
}

char cc[N + 1]; int b;

int solve(int l, int r, int has) {
	int m;

	if (!has && !query(l, r)) {
		memset(cc + l, '0', (r - l) * sizeof *cc);
		return 0;
	}
	if (r - l > 1) {
		m = (l + r) / 2;
		solve(m, r, !solve(l, m, 0));
	}
	return 1;
}

int main() {
	int t;

	scanf("%d%lf%d", &n, &p, &t), m = 1 / p;
	while (t--) {
		int l;

		memset(cc, '1', n * sizeof *cc), cc[n] = 0;
		for (l = 0; l < n; l += m)
			solve(l, min(l + m, n), 0);
		printf("A %s\n", cc), fflush(stdout);
		scanf("%*s");
	}
	return 0;
}

Compilation message

Main.c: In function 'query':
Main.c:15:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |  scanf("%s", s);
      |  ^~~~~~~~~~~~~~
Main.c: In function 'main':
Main.c:38:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |  scanf("%d%lf%d", &n, &p, &t), m = 1 / p;
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.c:46:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |   scanf("%*s");
      |   ^~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct

Subtask #1
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 4 ms 344 KB Output is correct
3 Correct 4 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 5 ms 344 KB Output is correct
8 Correct 6 ms 596 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 3 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 4 ms 344 KB Output is correct
14 Correct 4 ms 344 KB Output is correct
15 Correct 4 ms 344 KB Output is correct
16 Correct 5 ms 344 KB Output is correct
17 Runtime error 0 ms 344 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #2
56.600000001 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 344 KB Output is correct (P=0.001, F=15.1, Q=13.8) -> 90.00 points
2 Correct 87 ms 344 KB Output is correct (P=0.005256, F=51.1, Q=57.7) -> 59.34 points
3 Correct 170 ms 344 KB Output is correct (P=0.011546, F=94.9, Q=108.9) -> 56.60 points
4 Correct 323 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=219.5) -> 56.79 points
5 Correct 422 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=280.1) -> 58.10 points
6 Correct 631 ms 344 KB Output is correct (P=0.068648, F=366.2, Q=407.9) -> 61.83 points
7 Correct 847 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=530.3) -> 67.86 points
8 Correct 1039 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=675.9) -> 73.15 points
9 Correct 1223 ms 344 KB Output is correct (P=0.2, F=731.4, Q=770.0) -> 74.31 points