#include<iostream>
using namespace std;
int main() {
  int L,M,N;
  cin >>L>>M>>N;
  int sum=L*100+M*25+N;
  int ans = 0;
  sum-=(sum/1000)*1000;
  ans+=sum/100;
  sum-=(sum/100)*100;
  ans+=sum/25;
  sum-=(sum/25)*25;
  ans+=sum;
  cout << ans << endl;
}