Compilare: main.cpp: In function 'int main()': main.cpp:32:21: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=] printf("%d\n", ans); ^ main.cpp:13:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fsb.in", "r", stdin); ^ main.cpp:14:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fsb.out", "w", stdout); ^ main.cpp:17:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n%s", &n, s); ^