View Code of Problem 7

#include <iostream>
#include <cstdio>
using namespace std;
class num{
	public:
		int a,b;
};
int main(){
	int t;cin>>t;
	while(t--){
		int n;cin>>n;
		num arr[n];
		for(int i=0;i<n;i++){
			scanf("%d=%d",&arr[i].a,&arr[i].b);
		}
		int m;cin>>m;
		while(m--){
			int x;cin>>x;int flage=0;
			for(int j=0;j<n;j++){
				if(arr[j].a==x){
					cout<<arr[j].b<<endl;
					flage=1;
				}
				else{
					if(arr[j].b==x){
						cout<<arr[j].a<<endl;
						flage=1;
					}
				}
			}
			if(flage==0)cout<<"UNKNOW"<<endl; 
		} 
	} 
	return 0;
} 

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