#include <bits/stdc++.h> using namespace std; int main() { string a,b; cin>>a>>b; if(a == b) { cout<<"0"<<endl; } else { int n = (a.size() >= b.size() ? a.size() : b.size()); for(int i = 0;i < n;i++) { if(a[i] < b[i]) { cout<<a[i] - b[i]; return 0; } else if(a[i] > b[i]) { cout<<a[i] - b[i]; return 0; } } } return 0; }