結果
問題 | No.336 門松列列 |
ユーザー | kei |
提出日時 | 2018-10-21 18:49:23 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 231 ms / 2,000 ms |
コード長 | 2,680 bytes |
コンパイル時間 | 1,871 ms |
コンパイル使用メモリ | 181,668 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-12 01:13:53 |
合計ジャッジ時間 | 3,983 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 180 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 231 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 21 ms
5,376 KB |
testcase_07 | AC | 73 ms
5,376 KB |
testcase_08 | AC | 141 ms
5,376 KB |
testcase_09 | AC | 223 ms
5,376 KB |
testcase_10 | AC | 228 ms
5,376 KB |
testcase_11 | AC | 229 ms
5,376 KB |
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/336> 問題文============================================================ ================================================================= 解説============================================================= https://oeis.org/A001250 ================================================================ */ bool kadomatsu(int a,int b,int c){ return (b<a && b<c)||(b>a && b>c);} void test(){ for(int i = 1; i < 10;i++){ int cnt = 0; vector<int> v(i); iota(v.begin(),v.end(),1); do{ bool ok = true; for(int j = 0; j < i-2; j++){ if(kadomatsu(v[j], v[j+1], v[j+2])) continue; ok = false; break; } cnt+=ok; }while(next_permutation(v.begin(),v.end())); cout << i << " : " << cnt << endl; } } const ll MOD = 1e9+7; vector<ll> calc(ll n){ vector<ll> R{1}; map<ll,ll> A; A[-1] = 0; A[0] = 2; ll k = 0,e = 1; for(int i = 0; i <= n;i++){ ll Am = 0; A[k+e] = 0; e = -e; for(int j = 0; j <= i; j++){ (Am += A[k])%=MOD; A[k] = Am; k += e; } if(i > 1){ if(i%2==0){ R.push_back(A[-i/2]); }else{ R.push_back(A[i/2]); } } } return R; } ll solve(){ ll res = 0; ll N; cin >> N; if(N <= 2) return 0; res = calc(N).back(); return res; } int main(void) { cin.tie(0); ios_base::sync_with_stdio(false); //test(); cout << solve() << endl; return 0; }