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