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  1. #include <stdio.h>
  2. #define mod 6
  3.  
  4. int main(void) {
  5.     int n; scanf("%d", &n);
  6.     int xs[mod];
  7.     int m1 = -1;
  8.     int m2 = -1;
  9.     int i; for (i = 0; i < n; i++) {
  10.         int p; scanf("%d", &p);
  11.         if (i >= mod) {
  12.             m1 = (m1 < xs[i % mod]) ? xs[i % mod] : m1;
  13.             m2 = (m2 < m1 * p) ? m1 * p : m2;
  14.         }
  15.         xs[i % mod] = p;
  16.     }
  17.     printf("%d", m2);
  18.     return 0;
  19. }
  20.  
Success #stdin #stdout 0s 2252KB
comments (?)
stdin 
100
12
11
11
45
23
34
45
10
7
23
300
23
stdout 
13500
https://ideone.com/OvI4cB
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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