// No.32 貯金箱の憂鬱
// https://yukicoder.me/problems/no/32
//

#include <iostream>
using namespace std;

unsigned int solve(unsigned int L, unsigned int M, unsigned int N);


int main() {
    unsigned int L, M, N;
    cin >> L >> M >> N;
    unsigned int ans = solve(L, M, N);
    cout << ans << endl;
}

unsigned int solve(unsigned int L, unsigned int M, unsigned int N) {
    unsigned int coin_total = 0;
    coin_total += N % 25;
    M += N / 25;
    coin_total += M % 4;
    L += M / 4;
    coin_total += L % 10;
    return coin_total;
}