#include <iostream>
#include <algorithm>
using namespace std;

int main() {
    int height[10];
    for (int i = 0; i < 10; ++i) cin >> height[i];
    sort(height, height + 10, greater<int>);

    cout << height[0] << height[1] << height[2] << endl;
    
    return 0;
}
