Compilare: main.c: In function 'main': main.c:62:19: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=] printf ("%d", (1LL * eye[2][1] * sol[1][1] + 1LL * eye[2][2] * sol[2][1]) % MOD); ^ main.c:45:9: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen ("kfib.in", "r", stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:46:9: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen ("kfib.out", "w", stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:47:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^~~~~~~~~~~~~~~~