#include <cstdio>
#include <iostream>

using namespace std;

int main(void)
{
    int l, m, n;
    scanf("%d %d %d", &l, &m, &n);

    int sum;
    sum = 100 * l + 25 * m + 1 * n;

    cout << ""<<  (sum % 1000) / 100 + (sum % 100) / 25 + (sum % 25) <<"\n";

    return 0;
}