Compilare: user.c: In function ‘main’: user.c:5:27: warning: integer overflow in expression [-Woverflow] #define INF ( 1LL << 63 ) - 1 ^ user.c:23:19: note: in expansion of macro ‘INF’ sol[i][j] = INF; ^ user.c:17:19: warning: unused variable ‘ok’ [-Wunused-variable] int i, j, k, n, ok = 0; ^ user.c:18:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &n ); ^ user.c:20:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &d[i] ); ^