#include <algorithm>
#include <cstdio>
#include <iostream>
#include <map>
#include <cmath>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#include <stdlib.h>
#include <stdio.h>
using namespace std;

#define pb         push_back
#define mp         make_pair
#define ll         long long
#define PI         acos(-1.0)
#define ALL(A)     (A).begin(), (A).end()
#define vsort(v)   sort(v.begin(),v.end())
#define FOR(I,A,B) for(int I = (A); I < (B); ++I)

int main(){
  int L, M, N;
  cin >> N >> M >> L;
  //L->M
  M += L / 25;
  L -= (L / 25) * 25;

  //M->N
  N += M / 4;
  M -= (M / 4) * 4;

  //N->1000円札
  N -= (N / 10) * 10;

  cout << L + M + N << endl;

}