#include<bits/stdc++.h>
using namespace std;
int main(){
    int x,j,i;
    cin>>x;
    j=x%10;
    i=x/100;
    cout<<i*10+j;
}
/**************************************************************
	Problem: 1615
	User: yangjunwen
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/