#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int (i)=(0);(i)<(int)(n);++(i))
using ll = long long;
using P = pair<int, int>;
using namespace std;

int main() {
    int L, M, N;
    cin >> L >> M >> N;

    int ans = 0;
    ans += (N % 25);
    M += N/25;

    ans += (M % 4);
    L += M/4;

    ans += (L % 10);

    cout << ans << endl;
    return 0;
}