#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: sucongyi
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/