/* -*- coding: utf-8 -*-
 *
 * 32.cc: No.32 貯金箱の憂鬱 - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int N = 3;
const int cs[N] = {100, 25, 1};

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  int ns[N], sum = 0;
  for (int i = 0; i < N; i++) (cin >> ns[i]), sum += ns[i] * cs[i];

  sum %= 1000;

  int cnt = 0;
  for (int i = 0; i < N; i++) {
    cnt += sum / cs[i];
    sum %= cs[i];
  }

  printf("%d\n", cnt);
  return 0;
}