Different output in different compilers with same code

[shreyansh_2003]

I am getting different output in different compilers.
I
Code as :
include <bits/stdc++.h>
using namespace std;

int main() {
string s = “Ss”;
long long ss = -1;

if (s.size() > ss) {
    cout << "Hello";
}

return 0;

}