#include <bits/stdc++.h>
#define speed ios::sync_with_stdio(0);cin.tie(0)
using namespace std;

int main()
{
    speed;
    int alm = 300;
    int bar = 350;
    int cse = 400;
    int aDb, bDb, csDb;
    int stop = 0; //10-ig
    int eredmeny = 0;

    cin >> aDb >> bDb >> csDb;

    for(int i = 0; i < 10; i++) {
        if(stop == 10) {
            break;
        }

        else {
            if(aDb != 0) {
                eredmeny += alm;
                aDb--;
                stop++;
            }

        else if(aDb == 0 && bDb != 0) {
                eredmeny += bar;
                bDb--;
                stop++;
            }

        else if(aDb == 0 && bDb == 0 && csDb != 0) {
                eredmeny += cse;
                csDb--;
                stop++;

            }
        }
    }

    if(stop < 10) {
        cout << -1 << endl;
    }

    else {
        cout << eredmeny << endl;
    }

    return 0;
}