View Code of Problem 7

#include<iostream>
#include<map>
using namespace std;
int main()
{	
	std::ios::sync_with_stdio(false);
	int t;
	cin>>t;
	while(t--)
	{
		int n;
		cin>>n;
		map<int,int> m;
		for(int i=0;i<n;i++)
		{
			int key,value;
			scanf("%d=%d",&key,&value);
			m[key]=value;
			m[value]=key;
		}
		int query;
		cin>>query;
		while(query--)
		{
           int key;
           cin>>key;
           if(m.count(key)==0){
           		cout<<"UNKNOW"<<endl;
           }else{
           		cout<<m[key]<<endl;
           }
		}
		if(t!=0){
			cout<<endl;
		}
	}
}