Submission #3160171


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#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#define all(x) (x).begin(),(x).end()
#pragma GCC optimize ("-O3")
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }
//---------------------------------------------------------------------------------------------------
/*---------------------------------------------------------------------------------------------------
            ∧_∧  
      ∧_∧  (´<_` )  Welcome to My Coding Space!
     ( ´_ゝ`) /  ⌒i     
    /   \     | |     
    /   / ̄ ̄ ̄ ̄/  |  
  __(__ニつ/     _/ .| .|____  
     \/____/ (u ⊃  
---------------------------------------------------------------------------------------------------*/









int N; string S[101];
//---------------------------------------------------------------------------------------------------
#define yes "Yes"
#define no "No"
string solve() {
    set<string> s;
    s.insert(S[0]);

    rep(i, 1, N) {
        if (S[i - 1].back() != S[i][0]) return no;
        if (s.count(S[i])) return no;

        s.insert(S[i]);
    }

    return yes;
}
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> N;
    rep(i, 0, N) cin >> S[i];
    cout << solve() << endl;
}

Submission Info

Submission Time
Task B - Shiritori
User hamayanhamayan
Language C++14 (GCC 5.4.1)
Score 200
Code Size 1844 Byte
Status
Exec Time 1 ms
Memory 256 KB

Test Cases

Set Name Score / Max Score Test Cases
All 200 / 200 max_1, max_2, max_3, max_4, min_1, no1_1, no1_2, no2_1, no2_2, random_1, random_2, sample_01, sample_02, sample_03, sample_04, yes_1, yes_2
Sample 0 / 0 sample_01, sample_02, sample_03, sample_04
Case Name Status Exec Time Memory
max_1 1 ms 256 KB
max_2 1 ms 256 KB
max_3 1 ms 256 KB
max_4 1 ms 256 KB
min_1 1 ms 256 KB
no1_1 1 ms 256 KB
no1_2 1 ms 256 KB
no2_1 1 ms 256 KB
no2_2 1 ms 256 KB
random_1 1 ms 256 KB
random_2 1 ms 256 KB
sample_01 1 ms 256 KB
sample_02 1 ms 256 KB
sample_03 1 ms 256 KB
sample_04 1 ms 256 KB
yes_1 1 ms 256 KB
yes_2 1 ms 256 KB