#include<bits/stdc++.h>

using namespace std;
using ll=long long;
#define rep2(i, a, n) for(int i = (a); i < (n); i++)
#define rep(i, n) rep2(i,0,n)

int main(){
  cin.tie(nullptr);ios_base::sync_with_stdio(false);
  int h[4],c[3]={25,4,10};rep(i,3)cin>>h[i];
  h[3]=0;
  rep(i,3){
    h[i+1]+=h[i]/c[i];
    h[i]-=h[i]/c[i]*c[i];
  }
  int huga=0;
  rep(i,3){
    huga+=h[i];
  }
  cout<<huga<<endl;
}