#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,b,c; cin>>a>>b>>c; cout<<a*b*c; **/ int a,b,c; cin>>a; cin>>b; cin>>c; cout<<(a+b)/c; return 0; }