#include <iostream>
#include <fstream>
using namespace std;
ifstream f("test.in");
ofstream g("test.out");
int main()
{
int i, j, n, nr, x, maxim=0, gasit, y;
for(i=1;i<=3;i++){
f>>n; nr=0;
for(j=9;j>=0;j--){
gasit=0; x=n;
while(x!=0 && gasit==0){
if(x%10==j){
nr=nr*10+j;
gasit=1;
}
x=x/10;
}
}
if(maxim<nr){
maxim=nr; y=n;}
}
g<<y;
return 0;
}
