#include <iostream>
#include <vector>

using namespace std;

int main()
{
    const int almaFT = 300;
    const int barackFT = 350;
    const int cseresznyeFT = 400;
    int alma, barack, cseresznye;
    cin >> alma >> barack >> cseresznye;

    if (alma + barack + cseresznye < 10) {
        cout << -1;
    }
    else {
        int out = 0;
        for (int i = 0; i < 10; i++) {
            if (alma > 0) {
                out += almaFT;
                alma--;
            }
            else if (barack > 0) {
                out += barackFT;
                barack--;
            }
            else if (cseresznye > 0) {
                out += cseresznyeFT;
                cseresznye--;
            }
        }
        cout << out;
    }
}