Received the above error when submitting my code, with the qualification "FAIL- Participant has the answer but jury does not (Test Case 393)". This is my first time getting this error, but I assume it is a problem on the checker side. Is there somewhere I can report this? In case this is the place, here is my code:
#include <stdio.h> int main() { int t; scanf("%d", &t); for (int i = 0; i < t; i++) { int n, k; scanf("%d%d", &n, &k); if (k % 2) { printf("YES\n"); for (int j = 1; j < n; j+=2) { printf("%d %d\n", j, j + 1); } } else { int num_valid = 0; for (int j = 2; j < n + 1; j += 2) { if (j % 4 > 0 && (j + k) % 4 == 0) { num_valid++; } } if (num_valid < n / 4 || k == 0) { printf("NO\n"); continue; } printf("YES\n"); int max_j = 0; for (int j = 1; j < n; j+=2) { if (j + 3 + 2 * (j / 2) < n + 1) { max_j= j; printf("%d %d\n", j, j + (3 + 2 * (j / 2))); } } max_j += 2; for (int j = 2; j < n + 1; j+=2) { if (j % 4 > 0) { printf("%d %d\n", j, max_j); max_j += 2; } } } } }
The error came in the second test case run.