Submission #3556146

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Source Code Expand

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


int main() {
    long long n;
    cin >> n;
    string s[n];
    long long i;
    map<string,int> mp;
    bool ok = true;
    for(i=0;i<n;i++)
    {
        cin >> s[i];
        if(mp.find(s[i]) != mp.end())
        {
            ok = false;
            break;
        }
        if(i == 0)
            mp[s[i]]++;
        else
        {
            if(s[i][0] != s[i-1][s[i-1].length()-1])
            {
                ok = false;
                break;
            }
            mp[s[i]]++;
            
        }
    }
    cout <<(ok ? "Yes": "No");
	return 0;
}

Submission Info

Judge Result