#include <iostream>
using namespace std;
int main(){
int a;
cin >> a;
int b;
cin >> b;
int c;
cin >> c;
int d,e,f,g,h,i,j,k;
d = c+(25*b)+(100*a);
e = d/1000;
f = d-1000*e;
g = f/100;
h = f-100*g;
i = h/25;
j = h-i;
k = g+i+j;
cout << k << endl;
return 0;
}