#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <algorithm>
#include <sstream>
#include <map>
#include <set>
#include <cstdio>
using namespace std;

#define REP(i,a,b) for(i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
/* ここからが本編 */
/* */
/* 入力開始！ */
/* 入力終了！ */
int main()
{
   int i,j;
   int l,m,n;
   int yen;
   int ans;
   cin >> l >> m >> n;
   yen = (l*100 + m*25 + n) % 1000;

   ans = yen / 100;
   yen -= (yen / 100)*100;

   ans += yen / 25;
   yen -= (yen / 25)*25;

   ans += yen;
   printf("%d\n",ans);
   return 0;
}