#include<iostream>
#include<vector>
#include<algorithm>
#include<cstdio>
#include<cmath>
#include<string>
using namespace std;
int main(){
    int L,M,N,sum=0;
    cin >> L >> M >> N;
    M += (N / 25);
    sum += (N % 25);
    L += (M / 4);
    sum += (M % 4);
    //sum += (L / 10);
    sum += (L % 10);
    cout << sum; 
    return 0;
}