Submission #3260013

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Source Code Expand

#include <bits/stdc++.h>
#define MAXN 105
using namespace std;

int n;char l;
string p;
set <string> s;

int main()
{
	cin>>n;
	for (int i=1;i<=n;i++)
	{
		cin>>p;
		if (i!=1&&p[0]!=l){puts("No");return 0;}
		if (s.count(p)){puts("No");return 0;}
		s.insert(p);l=p[p.length()-1];
	}
	puts("Yes");
	return 0;
}

Submission Info

Judge Result