Compilare: main.cpp: In function 'int main()': main.cpp:34:53: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=] printf("%d", (1LL * p * x % MOD * y % MOD) % MOD); ^ main.cpp:19:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("dirichlet.in", "r", stdin); ^ main.cpp:20:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("dirichlet.out", "w", stdout); ^ main.cpp:22:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:8:7: warning: 'aa' may be used uninitialized in this function [-Wmaybe-uninitialized] int aa = a, p; ^~ main.cpp:8:7: warning: 'aa' may be used uninitialized in this function [-Wmaybe-uninitialized]