結果
問題 | No.238 Mr. K's Another Gift |
ユーザー |
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提出日時 | 2018-09-25 22:21:50 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 3 ms / 2,000 ms |
コード長 | 2,221 bytes |
コンパイル時間 | 1,671 ms |
コンパイル使用メモリ | 169,816 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-06 05:12:58 |
合計ジャッジ時間 | 3,738 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 40 |
ソースコード
#include "bits/stdc++.h" using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; const int INF = 1e9; const ll LINF = 1e18; template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; } template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; } template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; } template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; } /* <url:> 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ string solve(){ string res = "NA"; string S; cin >> S; auto check = [](string T){ string revT = T; reverse(revT.begin(),revT.end()); bool add = false; for(int i = 0; i < T.length();i++){ if(T[i] == revT[i]) continue; if(add) return make_pair(false,T); add = true; T.insert(T.length()-i, string(1,T[i])); revT.insert(i, string(1,T[i])); } return make_pair(true,T); }; auto ret1 = check(S); if(ret1.first){ res = ret1.second; } reverse(S.begin(),S.end()); auto ret2 = check(S); if(ret2.first){ res = ret2.second; reverse(res.begin(),res.end()); } if(ret1.first || ret2.first){ if(res.length() == S.length()){ res.insert(res.length()/2, string(1,res[res.length()/2])); } } return res; } int main(void) { cin.tie(0); ios_base::sync_with_stdio(false); cout << solve() << endl; return 0; }