Compilare: user.cpp: In function ‘int main()’: user.cpp:38:31: 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:15:12: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] return result; ^ user.cpp: In function ‘int locsika(int, int)’: user.cpp:24:27: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (fac(n)/(fac(k)*fac(n-k)))%MOD; ^ user.cpp:24:27: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:24:19: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (fac(n)/(fac(k)*fac(n-k)))%MOD; ^