C++ :

#include<bits/stdc++.h>
using namespace std;
string ren[10]={"White", "Green", "Peacock", "Plum", "Scarlett", "Mustard"};
string niu[10]={"Hall","Hall","Hall","Hall","Hall","Hall"};
string r,son,room,ans;
int n,t,tim,bj;
int main()
{
	cin>>r>>t>>n;
	while(n--)
	{
		cin>>tim>>son>>room;
		if(tim<=t)
			for(int i=0;i<6;i++)
				if(ren[i]==son) niu[i]=room;
	}
	for(int i=0;i<6;i++)
		if(niu[i]==r) {ans=ren[i];bj++;}
	if(bj==1) cout<<ans;
	else cout<<-1;
	return 0;
}