Submission #3579373

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Source Code Expand

#include<bits/stdc++.h>
using namespace std ;
const int maxn = 100 + 10;
set < string > st ;
string s[maxn] ;
int main()
{
	int n ;
	cin >> n ;
	cin >> s[0] ;
	st.insert ( s[0] ) ;
	char c = s[0][s[0].size()-1] ;
	bool b , p = false ;
	for ( int i =1; i< n ; i++)
	{
		//cout << " I " << i << "  c " << c << endl;
		cin >> s[i] ;
		b = st.insert ( s[i] ).second ;
		//cout << " b " << b << endl;
		if ( s[i][0] !=c || b == false)
		{
			p = true ;
		}
		c= s[i][s[i].size()-1] ;
	}
	if ( !p ) 
	cout << "Yes" << endl;
	else
		cout << "No" << endl;
		

}

Submission Info

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