Submission #875939

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
875939	2023-11-20 19:34:24	rainboy	Cards (LMIO19_korteles)	C11	100 / 100	77 ms	5152 KiB

korteles

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#include <stdio.h>
#define A 26
#define M 531441  /* M = (A + 1)^4 */
int idx(int a, int b, int c, int d) {
  return ((a * (A + 1) + b) * (A + 1) + c) * (A + 1) + d;
}
int main() {
  static int kk[M];
  int n, a, b, c, d, e, f, g, h, u, w;
  long long ans;
  scanf("%d", &n);
  while (n--) {
    static char s[4], t[4];
    int u;
    scanf("%s%s", s, t);
    a = s[0] - 'A' + 1, b = s[1] - 'A' + 1;
    c = t[0] - 'A' + 1, d = t[1] - 'A' + 1;
    for (u = 0; u < 16; u++)
      kk[idx((u & 1) != 0 ? a : 0, (u & 2) != 0 ? b : 0, (u & 4) != 0 ? c : 0, (u & 8) != 0 ? d : 0)]++;
  }
  ans = 0;
  for (a = 1; a <= A; a++)
    for (b = 1; b <= A; b++)
      for (c = 1; c <= A; c++)
        for (d = 1; d <= A; d++)
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

korteles.c: In function 'main':
korteles.c:82:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   82 |       if (a == c && b == d || a == b && c == d)
      |           ~~~~~~~^~~~~~~~~
korteles.c:15:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
korteles.c:20:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |   scanf("%s%s", s, t);
      |   ^~~~~~~~~~~~~~~~~~~

• Subtask 1: 16 / 16
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 19 / 19
• Subtask 5: 25 / 25