rt。

#include<bits/stdc++.h>
using namespace std;
struct node
{
	string text;
	string answer;
};
node s[15];
string s1,s2,s3,s4,s5;
int main()
{
	int n,q;
	cin>>n>>q;
	for(int i = 1;i<=n;i++)
	{
		cin>>s[i].text>>s[i].answer;
	}
	
	for(int i = 1;i<=q;i++)
	{
		cin>>s1>>s2>>s3>>s4>>s5;
		for(int j = 1;j<=n;j++)
		{
			if(s[j].text==s1)
			{
				if(s[j].answer==s2)
				{
					cout<<'A'<<endl;
					break;
				}
				else if(s[j].answer==s3)
				{
					cout<<'B'<<endl;
					break;
				}
				else if(s[j].answer==s4)
				{
					cout<<'C'<<endl;
					break;
				}
				else if(s[j].answer==s5)
				{
					cout<<'D'<<endl;
					break;
				}
				break;
			}
		}
	}
	return 0;
}