#include<bits/stdc++.h>
using namespace std;
int main(){
	
	int i,n,s,c,d;
	cin>>i;
	n=i/100;
	d=i/10%10;
	s=i%10;
	c=n*10+s;
	cout<<c;
	
	return 0;
}

/**************************************************************
	Problem: 1615
	User: huangyaojie3
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/