#include <bits/stdc++.h> using namespace std; queue q; queue qq; int main() { int a,b,n; cin>>a>>b>>n; for(int i=1;i<=a;i++){ q.push(i); } for(int i=1;i<=b;i++){ qq.push(i); } while(n--){ int x=q.front(),y=qq.front(); cout<<x<<" "<<y<<endl; q.pop(); qq.pop(); q.push(x); qq.push(y); }
return 0;
}