View Code of Problem 7

#include<iostream>

using namespace std;


const int maxn=100001;

int main(){
	
    int t,n,m,a[maxn],b[maxn],c[maxn];
    cin>>t;
    while(t--){
        cin>>n;
        char x='=';
        for (int i = 0; i < n; i++)
        {
           cin>>a[i]>>x>>b[i];
        }
        cin>>m;
        for (int i = 0; i < m; i++)
        { 
        	
            cin>>c[i];
            for (int j  = 0; j < n; j++)
            {
                if(c[i]==a[j]) {cout<<b[j]<<endl;break;}
                else if(c[i]==b[j]) {cout<<a[j]<<endl;break;}
              if(j==n-1)cout<<"UNKNOW"<<endl;
            }
           
        }
        cout<<endl;
    }
    return 0;
}