#include <iostream>
#include <cmath>
using namespace std;
int main() {
int n,a;
cin>>n;
a=(n/100)*10+n%10;
cout<<a;
return 0;
}
#include <iostream>
#include <cmath>
using namespace std;
int main() {
int n,a;
cin>>n;
a=(n/100)*10+n%10;
cout<<a;
return 0;
}