View Code of Problem 7

#include<iostream>
#include<cstdio>
#include<string>
#include<cstring>
#include<cstdlib>
#include<algorithm>
using namespace std;

int a1[10000000],b1[10000000];

int main()
{
    int n;
    int a,b;
    scanf("%d",&n);
    while(n--)
    {
        memset(a1,-1,sizeof(a1));
        int n1,n2;
        scanf("%d",&n1);
        while(n1--){
        scanf("%d=%d",&a,&b);
        a1[a] = b;
        a1[b] = a;
        }
        scanf("%d",&n2);
        while(n2--)
        {
            scanf("%d",&n1);
            if(a1[n1]!=-1)
                printf("%d\n",a1[n1]);
            else
                printf("UNKNOW\n");
            if(n2==0&&n!=0)
                printf("\n");
        }
    }
}