#include<bits/stdc++.h>

using namespace std;

int main(){
    int L, M, N, O = 0; cin >> L >> M >> N;
    int ans = 0;
    
    M += N/25;
    N %= 25;
    L += M/4;
    M %= 4;
    L %= 10;
    
    ans += L + M + N;
    
    cout << ans << endl;
}