Submission #830838

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
830838	2023-08-19 11:19:10	rainboy	Liteh and Newfiteh (INOI20_litehfiteh)	C11	100 / 100	81 ms	14644 KiB

Main

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#include <stdio.h>
#include <string.h>
#define N 100000
#define L 16  /* L = floor(log2(N)) */
#define INF 0x3f3f3f3f
int min(int a, int b) { return a < b ? a : b; }
int main() {
  static int aa[N], dp[N][L + 1], dq[N][L + 1], dr[N + 1];
  int n, i, j, l, a;
  scanf("%d", &n);
  for (i = 0; i < n; i++)
    scanf("%d", &aa[i]);
  for (i = 0; i < n; i++)
    if (aa[i] > L + 1) {
      printf("-1\n");
      return 0;
    }
  for (l = 0; 1 << l <= n; l++) {
    if (l == 0)
      for (i = 0; i < n; i++)
        memset(dp[i], 0x3f, (L + 1) * sizeof *dp[i]), dp[i][aa[i]] = 0;
    else
      for (i = 0; i + (1 << l) <= n; i++)
        for (a = 0; a <= L; a++)
          dp[i][a] = min(dp[i][a] + dp[i + (1 << l - 1)][a], INF);
    for (i = 0; i < n; i++)
 
 
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Compilation message (stderr)

Main.c: In function 'main':
Main.c:29:47: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   29 |      dp[i][a] = min(dp[i][a] + dp[i + (1 << l - 1)][a], INF);
      |                                             ~~^~~
Main.c:14:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
Main.c:16:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70