#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
using ll = long long;

int p[3]={100, 25, 1};

int main(void){
  int cnt[3]; cin >> cnt[0] >> cnt[1] >> cnt[2];
  int sum=0;
  for(int i=0; i<3; i++) sum+=cnt[i]*p[i];
  sum-=sum/1000*1000;
  int ans=0;
  for(int i=0; i<3; i++){
    int d=sum/p[i];
    ans+=d, sum-=p[i]*d;
  }
  cout << ans << endl;
  return 0; 
}