View Code of Problem 7

#include<iostream>
#include <algorithm>
 
using namespace std;
 
int main(){
	int t;
 
	cin>>t;
 
	while(t--){
		int n;
		int numarr[100005];
		fill(numarr,numarr+100005,-1);
		cin>>n;
		for(int i=0;i<n;++i){
			int a,b;
			scanf("%d=%d",&a,&b);
			numarr[a]=b;
			numarr[b]=a;
		}
		int m;
		cin>>m; 
		int ans[m];
		for(int i=0;i<m;++i){
			int num;
			cin>>num;
			if(numarr[num]==-1){
				cout<<"UNKNOW";
			}
			else {
				cout<<numarr[num];
			}
			cout<<endl;
		}
	}
	return 0;
}