Submission #3579533

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Source Code Expand

#include<bits/stdc++.h>

using namespace std;

map <string , bool> mp;
int n;
bool b;
string s;
char last;

int main()
{
	cin >> n;
	for(int i = 0 ; i < n ; i++)
	{
		cin >> s;
		if(i == 0)
			last = s[s.size() - 1];
//		cout << last << "#";
		if(mp[s])
		{
			b = 1;
		}
		else
		{
			mp[s] = 1;
			if(s[0] != last && i != 0)
				b = 1;
			last = s[s.size() - 1];
		}
	}
	if(b)
		cout << "No";
	else
		cout << "Yes";
}

Submission Info

Judge Result