結果
問題 | No.254 文字列の構成 |
ユーザー |
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提出日時 | 2018-09-26 21:56:36 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 4 ms / 5,000 ms |
コード長 | 1,957 bytes |
コンパイル時間 | 1,983 ms |
コンパイル使用メモリ | 168,724 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-12 04:11:12 |
合計ジャッジ時間 | 3,085 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 30 |
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:https://yukicoder.me/problems/no/254>問題文=============================================================================================================================解説=============================================================================================================================*/string solve(){const ll MAXS = 1e5+1;vector<ll> cnt(MAXS,0);for(ll i = 1; i < MAXS;i++){cnt[i] = i + i*(i-1)/2;}string res;ll N; cin >> N;ll l = 0;while(cnt[l+1] + cnt[l+2] <= N) l++;ll r = l+1;if(2*cnt[l+1] <= N) l++;for(int i = 0; i < l;i++){res += "ab";}if(l!=r)res += "a";N -= cnt[l]+cnt[r];while(N!=0){if(N%3==0){res += "c";}if(N%3==1){res += "d";}if(N%3==2){res += "e";}N--;}return res;}int main(void) {cin.tie(0); ios_base::sync_with_stdio(false);cout << solve() << endl;return 0;}