#include <bits/stdc++.h>
using namespace std;

int main(){
  int l,m,n;
  cin>>l>>m>>n;
  int odd=(l*100+m*25+n)%1000;
  int cnt=0;
  cnt+=odd/100;
  odd%=100;
  cnt+=odd/25;
  odd%=25;
  cnt+=odd;
  cout<<cnt<<endl;
  return 0;
}