#include<iostream>// in out using namespace std; int main(){ /** int a; cin>>a; cout<<a; int a,b; cin>>a>>b; cout<<a+b; int x,y ; cin>>x>>y; cout<<x*y; int a,s,d; cin>>a>>s>>d; cout<<a*s*d; **/ int a,b,c; cin>>a>>b>>c; cout<<(a+b)/c; return 0; }