//c726. K-I-S-S-I-N-G (一行版)
#include<iostream>
using namespace std;
int main()
{
    string a,b;//string是字串的意思
    cin>>a>>b;//輸入的是剛剛宣告的變數
    cout<<a<<" and "<<b<<" sitting in the tree";//記得用" "隔開
}