View Code of Problem 7

#include<stdio.h>
int main()
{
	int T,n,m,flag;
	int a[100000], b[100000];
	int s[100000]  ;
	while (scanf("%d",&T)!=EOF)
	{
		while (T--)
		{
			a[100000] = -1;
			b[100000] = -1;
			s[100000] = -1;
			scanf("%d", &n);
			for (int i = 0; i < n; i++)
			{
				scanf("%d=%d", &a[i], &b[i]);
			}
			scanf("%d", &m);
			for (int i = 0; i < m; i++)
			{
				scanf("%d", &s[i]);
			}
			flag = 0;
			for (int i = 0; i < m; i++)
			{
				for (int j = 0; j < n; j++)
				{
					if (s[i] == a[j]) 
					{ 
						printf("%d\n", b[j]);
						flag = 1;
						break;
					}
					else if (s[i] == b[j])
					{
						printf("%d\n", a[j]);
						flag = 1;
						break;
					}
					else
					{
						flag = 0;
					}
				}
				if (flag==0)
				{
					printf("UNKNOW\n");
				}
			}
			printf("\n");
		}
	}
	return 0;
}