Submission #1058859

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1058859	2024-08-14 14:34:39	rainboy	COVID tests (CEOI24_covid)	C11	10 / 100	5825 ms	11860 KiB

Main

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#include <stdio.h>
#include <string.h>
#define N 1000
#define INF 1e9
double min(double a, double b) { return a < b ? a : b; }
unsigned int Z = 12345;
int rand_() {
  return (Z *= 3) >> 1;
}
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);
  printf("Q %s\n", cc), fflush(stdout);
  scanf("%s", s);
  return s[0] == 'P';
}
double qq[N + 1], dp[N + 1], dq[N + 1][N + 1]; int ll[N + 1], mm[N + 1][N + 1];
void init() {
  int i, l, r, m;
  double x;
 
 
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Compilation message (stderr)

Main.c: In function 'query':
Main.c:22:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |  scanf("%s", s);
      |  ^~~~~~~~~~~~~~
Main.c: In function 'main':
Main.c:79:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   79 |  scanf("%d%lf%d", &n, &p, &t), m = 1 / p * 4, subtask = t == 1 ? 1 : 2, init();
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.c:91:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   91 |   scanf("%*s");
      |   ^~~~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 10 / 10
• Subtask 2: 0 / 90