Compilare: user.cpp: In function ‘int main()’: user.cpp:16:88: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d\n",(1ll*fact[n]*(1ll*pow(1ll*fact[n-s]*fact[s],key-2))*(pow(2,s)-2))%key); ^ user.cpp:11:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^