結果
問題 | No.2890 Chiffon |
ユーザー |
|
提出日時 | 2024-09-18 23:32:03 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 621 ms / 2,000 ms |
コード長 | 3,191 bytes |
コンパイル時間 | 2,196 ms |
コンパイル使用メモリ | 214,588 KB |
最終ジャッジ日時 | 2025-02-24 09:30:29 |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 53 |
ソースコード
#include <bits/stdc++.h>using namespace std;#define rep(i, n) for(int i=0; i<n; i++)#define debug 0#define YES cout << "Yes" << endl;#define NO cout << "No" << endl;using ll = long long;using ld = long double;const int mod = 998244353;const int MOD = 1000000007;const double pi = atan2(0, -1);const int inf = 1 << 31-1;const ll INF = 1LL << 63 - 1;#include <time.h>#include <chrono>//vectorの中身を空白区切りで出力template<typename T>void printv(vector<T> v) {for (int i = 0; i < v.size(); i++) {cout << v[i];if (i < v.size() - 1) {cout << " ";}}cout << endl;}//vectorの中身を改行区切りで出力template<typename T>void print1(vector<T> v) {for (auto x : v) {cout << x << endl;}}//二次元配列を出力template<typename T>void printvv(vector<vector<T>> vv) {for (vector<T> v : vv) {printv(v);}}//vectorを降順にソートtemplate<typename T>void rsort(vector<T>& v) {sort(v.begin(), v.end());reverse(v.begin(), v.end());}//昇順priority_queueを召喚template<typename T>struct rpriority_queue {priority_queue<T, vector<T>, greater<T>> pq;void push(T x) {pq.push(x);}void pop() {pq.pop();}T top() {return pq.top();}size_t size() {return pq.size();}bool empty() {return pq.empty();}};//mod mod下で逆元を算出する//高速a^n計算(mod ver.)ll power(ll a, ll n) {if (n == 0) {return 1;}else if (n % 2 == 0) {ll x = power(a, n / 2);x *= x;x %= mod;return x;}else {ll x = power(a, n - 1);x *= a;x %= mod;return x;}}//フェルマーの小定理を利用ll modinv(ll p) {return power(p, mod - 2) % mod;}//Mexを求めるstruct Mex {map<int, int> mp;set<int> s;Mex(int Max) {for (int i = 0; i <= Max; i++) {s.insert(i);}}int _mex = 0;void Input(int x) {mp[x]++;s.erase(x);if (_mex == x) {_mex = *begin(s);}}void Remove(int x) {if (mp[x] == 0) {cout << "Mex ERROR!: NO VALUE WILL BE REMOVED" << endl;}mp[x]--;if (mp[x] == 0) {s.insert(x);if (*begin(s) == x) {_mex = x;}}}int mex(){return _mex;}};int main() {int N, K;cin >> N >> K;vector<int> A(K);set<int> straw;rep(i, K) {cin >> A[i];straw.insert(A[i]);}set<vector<int>> heap;vector<vector<int>> memo(K);rep(i, K) {int s = A[(K+i-1)%K] + 1, e = A[i] + 1;int d = (2 * N + e - s) % (2 * N);memo[i] = { d,s,e };heap.insert({ d,s,e,i });}int ans = 0;while (1) {vector<int> v = *begin(heap);heap.erase(v);int index = v[3];int d = v[0];int s = v[1], e = v[2];ans = max(ans, d);if (straw.count((e + 1) % (2 * N))) {break;}int next_index = (index + 1) % K;int next_d = memo[next_index][0], next_s = memo[next_index][1], next_e = memo[next_index][2];heap.erase({ next_d, next_s, next_e, next_index });e =(e+2)%(2*N);next_s = (next_s + 2) % (2 * N);d += 2;next_d -= 2;heap.insert({ d,s,e,index });heap.insert({ next_d, next_s, next_e, next_index });memo[index] = { d,s,e };memo[next_index] = { next_d, next_s, next_e };}cout << ans << endl;}