Compilare: user.cpp: In function ‘int main(int, char**)’: user.cpp:59:150: warning: format ‘%Ld’ expects argument of type ‘long long int’, but argument 3 has type ‘long int’ [-Wformat=] fprintf(o, "%Ld\n",fast_pow_mod(factorials[K], N / K + 1, 1000000007L) * fast_pow_mod(factorials[K - N % K],1000000005L, 1000000007L) % 1000000007L); ^ user.cpp:49:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(i, "%d\n",&T); ^ user.cpp:52:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(i, "%d %d\n", &N, &K); ^