// bavasarlas.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <stdio.h>
#include <stdlib.h>

int main()
{
    int A, B, C;
    scanf("%d %d %d\n", &A, &B, &C);
    if (A + B + C < 10)
    {
        printf("-1");
    }
    else if (A + B < 10)
    {
        printf("%d", A * 300 + B * 350 + (10 - (A + B)) * 400);
    }
    else if (A < 10)
    {
        printf("%d", A * 300 + (10 - A) * 350);
    }
    else
    {
        printf("3000");
    }

    return 0;
}

// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu

// Tips for Getting Started: 
//   1. Use the Solution Explorer window to add/manage files
//   2. Use the Team Explorer window to connect to source control
//   3. Use the Output window to see build output and other messages
//   4. Use the Error List window to view errors
//   5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
//   6. In the future, to open this project again, go to File > Open > Project and select the .sln file