結果
問題 |
No.411 昇順昇順ソート
|
ユーザー |
![]() |
提出日時 | 2018-12-02 22:23:38 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 1,840 bytes |
コンパイル時間 | 1,556 ms |
コンパイル使用メモリ | 169,560 KB |
実行使用メモリ | 10,624 KB |
最終ジャッジ日時 | 2024-07-01 05:28:30 |
合計ジャッジ時間 | 5,505 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 23 TLE * 1 -- * 6 |
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; inline ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; } inline ll lcm(ll a, ll b) { return a / gcd(a, b)*b; } 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/411> 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ ll solve(){ ll res = 0; ll N,K; cin >> N >> K; vector<int> order(N); iota(order.begin(),order.end(),1); do{ if(order.front()!=K) continue; int cnt = 0; for(int i = 1;i<N;i++){ cnt += order[i-1]>order[i]; } res+=cnt==1; }while(next_permutation(order.begin(),order.end())); return res; } int main(void) { cin.tie(0); ios_base::sync_with_stdio(false); cout << solve() << endl; return 0; }