#include<bits/stdc++.h>
using namespace std;
int a,b,c,a1,b1,c1,n;
int main(){
	cin>>a>>b>>c;
	a1=a*0.2;
	b1=b*0.3;
	c1=c*0.5;
	n=a1+b1+c1+1;
	cout<<n;
}
/**************************************************************
	Problem: 1565
	User: zhangziang
	Language: C++
	Result: Wrong Answer
****************************************************************/