Compilare: user.cpp: In function ‘int main()’: user.cpp:43:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); i++) ^ user.cpp: In function ‘long long int fac(long long int)’: user.cpp:19:12: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] return result; ^ user.cpp: In function ‘int locsika(int, int)’: user.cpp:29:33: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] return ((fac(n)%MOD)/(fac(k)*fac(n-k))%MOD)%MOD; ^ user.cpp:29:33: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:29:20: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] return ((fac(n)%MOD)/(fac(k)*fac(n-k))%MOD)%MOD; ^