a,b,c=map(int,input().split()) print(int(a0.2+b0.3+c*0.5))

a,b,c=map(int,input().split()) print(int(a0.2+b0.3+c*0.5))

#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; int d=a0.2+b0.3+c*0.5; cout<<d; return 0; }

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#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; cout<<a0.2+b0.3+c*0.5; return 0; }

#include <iostream> using namespace std; int main(){ int A,B,C; cin>>A>>B>>C; cout<<A0.2+B0.3+C*0.5; return 0; }