AC代码!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

#include <bits/stdc++.h>
using namespace std;
int main()
{
    string s1,s2;
    cin >> s1 >> s2;
    int u = 0;
    for (int i = 0;i < min(s1.length(),s2.length());i++)
    {
        if (s1[i] == s2[i])
        {
            continue;
        }
        else
        {
            u = s1[i] - s2[i];
            break;
        }
    }
    cout << u;
}