oj.uz

Submission #1089034

# Submission time Handle Problem Language Result Execution time Memory
1089034 2024-09-15T19:26:31 Z vjudge1 Izbori (COCI17_izbori) C++17
4 / 80
 49 ms 428 KB 
/* https://oj.uz/problem/view/COCI17_izbori?locale=en: WA */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

unsigned int popcnt(unsigned int x) {
  unsigned int out = 0;
  while (x) {
    ++out;
    x &= x - 1;
  }
  return out;
}

int main(void) {
  unsigned int N, M, K, i;
  unsigned int *priorities;
  unsigned int *scores;
  unsigned int best;
  (void) scanf("%u %u %u", &N, &M, &K);
  best = M - 1;
  priorities = (unsigned int *) calloc(N*M, sizeof(*priorities));
  scores = (unsigned int *) calloc(M, sizeof(*scores));
  for (i = 0; i < N*M; ++i)
    (void) scanf(" %u", &priorities[i]);
  for (i = 0; i < (1 << M)-1; ++i) {
    unsigned int j, k, l;
    memset(scores, 0, sizeof(*scores) * M);
    for (j = 0; j < N; ++j) {
      l = M;
      for (k = 0; k < M; ++k)
        if ((~i & (1<<k)) && (l == M || priorities[j*M+k] < priorities[j*M+l]))
          l = k;
      ++scores[l];
    }
    k = 0;
    for (j = 1; j < M; ++j)
      if (scores[j] > scores[k])
        k = j;
    if (i == 0)
      printf("%u\n", k + 1);
    if (k == K-1)
      best = popcnt(i);
  }
  printf("%u\n", best);
  return EXIT_SUCCESS;
}

Compilation message

izbori.cpp: In function 'int main()':
izbori.cpp:27:17: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare]
   27 |   for (i = 0; i < (1 << M)-1; ++i) {
      |               ~~^~~~~~~~~~~~
izbori.cpp:21:15: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |   (void) scanf("%u %u %u", &N, &M, &K);
      |          ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
izbori.cpp:26:17: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     (void) scanf(" %u", &priorities[i]);
      |            ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 80.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB Output isn't correct
2 Incorrect 7 ms 428 KB Output isn't correct
3 Incorrect 1 ms 348 KB Output isn't correct
4 Incorrect 7 ms 348 KB Output isn't correct
5 Incorrect 2 ms 348 KB Output isn't correct
6 Incorrect 2 ms 348 KB Output isn't correct
7 Incorrect 0 ms 344 KB Output isn't correct
8 Incorrect 9 ms 416 KB Output isn't correct
9 Incorrect 4 ms 348 KB Output isn't correct
10 Incorrect 1 ms 348 KB Output isn't correct
11 Partially correct 7 ms 416 KB Partially correct
12 Partially correct 23 ms 428 KB Partially correct
13 Incorrect 49 ms 404 KB Output isn't correct
14 Incorrect 16 ms 424 KB Output isn't correct
15 Incorrect 4 ms 424 KB Output isn't correct
16 Incorrect 42 ms 348 KB Output isn't correct
17 Incorrect 17 ms 348 KB Output isn't correct
18 Incorrect 39 ms 428 KB Output isn't correct
19 Incorrect 40 ms 348 KB Output isn't correct
20 Incorrect 46 ms 348 KB Output isn't correct