#include<iostream>
using namespace std;

int main(){
  int L,M,N;
  cin>>L>>M>>N;
  if(N >= 25){
    M += N/25;
    N %= 25;
  }
  if(M >= 4){
    L += M/4;
    M %= 4;
  }
  cout<<L%10+M+N<<endl;
  return 0;
}