#include <bits/stdc++.h>
#define int long long
#define double long double
using namespace std;
const int MOD = 1000000007;
const int INF = 1e14;
using Graph = vector<vector<int>>;

signed 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;
}