#include <bits/stdc++.h> using namespace std; int main() { int s; cin>>s; cout<<s%10; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; cout<<a%10; return 0; }

#include<iostream> using namespace std; int main(){ int n; cin>>n; cout<<n%10; return 0; }