include <iostream>

using namespace std; int main () { int n,n1,n2,n3; cin>>n; n1=n/100; n2=n/10%10; n3=n%10; if (n1==min(n1,(min(n2,n3)))) cout<<n2<<n3; else if (n2==min(n1,(min(n2,n3)))) cout<<n1<<n3; else if (n3==min(n1,(min(n2,n3)))){ if (n1>n2) cout<<n1<<n2; else if(n2>n1) cout<<n2<<n3;} }