結果
問題 | No.1834 1D Gravity |
ユーザー | cn_449 |
提出日時 | 2022-01-08 16:01:11 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 32 ms / 2,000 ms |
コード長 | 4,604 bytes |
コンパイル時間 | 1,947 ms |
コンパイル使用メモリ | 145,236 KB |
実行使用メモリ | 8,068 KB |
最終ジャッジ日時 | 2024-11-14 09:27:52 |
合計ジャッジ時間 | 3,781 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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 | 2 ms
6,820 KB |
testcase_01 | AC | 25 ms
7,940 KB |
testcase_02 | AC | 25 ms
7,936 KB |
testcase_03 | AC | 25 ms
7,940 KB |
testcase_04 | AC | 25 ms
8,068 KB |
testcase_05 | AC | 25 ms
8,064 KB |
testcase_06 | AC | 25 ms
7,940 KB |
testcase_07 | AC | 2 ms
6,820 KB |
testcase_08 | AC | 2 ms
6,816 KB |
testcase_09 | AC | 2 ms
6,820 KB |
testcase_10 | AC | 2 ms
6,816 KB |
testcase_11 | AC | 2 ms
6,816 KB |
testcase_12 | AC | 2 ms
6,816 KB |
testcase_13 | AC | 32 ms
7,312 KB |
testcase_14 | AC | 30 ms
7,176 KB |
testcase_15 | AC | 27 ms
6,816 KB |
testcase_16 | AC | 25 ms
6,848 KB |
testcase_17 | AC | 25 ms
7,164 KB |
testcase_18 | AC | 28 ms
7,556 KB |
testcase_19 | AC | 28 ms
7,460 KB |
testcase_20 | AC | 30 ms
7,556 KB |
testcase_21 | AC | 24 ms
7,168 KB |
testcase_22 | AC | 24 ms
6,816 KB |
testcase_23 | AC | 23 ms
6,820 KB |
testcase_24 | AC | 22 ms
6,816 KB |
testcase_25 | AC | 23 ms
6,820 KB |
testcase_26 | AC | 2 ms
6,816 KB |
testcase_27 | AC | 2 ms
6,820 KB |
testcase_28 | AC | 2 ms
6,816 KB |
ソースコード
#include <iostream> #include <vector> #include <algorithm> #include <cmath> #include <string> #include <queue> #include <stack> #include <set> #include <map> #include <iomanip> #include <utility> #include <tuple> #include <functional> #include <bitset> #include <cassert> #include <complex> #include <stdio.h> #include <time.h> #include <numeric> #include <random> #include <unordered_set> #include <unordered_map> #define all(a) (a).begin(), (a).end() #define rep(i, n) for (ll i = 0; i < (n); i++) //#define rep(i, n) for (int i = 0; i < (n); i++) #define range(i, a, b) for (ll i = (a); i < (b); i++) #define pb push_back #define debug(x) cerr << __LINE__ << ' ' << #x << ':' << (x) << '\n' #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") using namespace std; typedef long long ll; typedef unsigned int uint; typedef unsigned long long ull; typedef long double ld; typedef pair<ll, ll> P; typedef pair<ll, P> Q; //typedef complex<ld> com; template<class T> using pri_s = priority_queue<T, vector<T>, greater<T>>; template<class T> using pri_b = priority_queue<T>; constexpr int inf = 1000000010; constexpr int inf2 = 2000000010; constexpr ll INF = 1000000000000000010; constexpr int mod1e9 = 1000000007; constexpr int mod998 = 998244353; constexpr ld eps = 1e-12; constexpr ld pi = 3.141592653589793238; constexpr ll ten(int n) { return n ? 10 * ten(n - 1) : 1; }; int dx[] = { 1,0,-1,0,1,1,-1,-1 }; int dy[] = { 0,1,0,-1,1,-1,1,-1 }; ll mul(ll a, ll b) { return (a > INF / b ? INF : a * b); } void fail() { cout << "-1\n"; exit(0); } void no() { cout << "No\n"; exit(0); } template<class T> void er(T a) { cout << a << '\n'; exit(0); } template<class T, class U> inline bool chmax(T &a, const U &b) { if (a < b) { a = b; return true; } return false; } template<class T, class U> inline bool chmin(T &a, const U &b) { if (a > b) { a = b; return true; } return false; } template<class T> istream &operator >> (istream &s, vector<T> &v) { for (auto &e : v) s >> e; return s; } template<class T> ostream &operator << (ostream &s, const vector<T> &v) { for (auto &e : v) s << e << ' '; return s; } template<class T, class U> ostream &operator << (ostream &s, const pair<T, U> &p) { s << p.first << ' ' << p.second; return s; } struct fastio { fastio() { cin.tie(0); cout.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); cerr << fixed << setprecision(20); } }fastio_; vector<int> make(int n) { vector<int> a(n); rep(i, n) a[i] = i; random_device seed_gen; mt19937 engine(seed_gen()); shuffle(all(a), engine); return a; } int solve(vector<int> a) { //debug(a); int res = 0; int n = a.size(); if (n == 2) return 0; vector<int> b(n, -1); chmax(b[1], a[0]); chmax(b[n - 2], a[n - 1]); for (int i = 1; i < n - 1; i++) { if (a[i - 1] < a[i + 1]) chmax(b[i + 1], a[i]); else chmax(b[i - 1], a[i]); } vector<vector<int>> v; vector<int> tmp; rep(i, n) { if (b[i] == -1) { if (tmp.size() != 0) v.pb(tmp); tmp.clear(); } else tmp.pb(b[i]); } if (tmp.size() != 0) v.pb(tmp); for (vector<int> w : v) chmax(res, solve(w) + 1); return res; } int solve2(vector<int> w) { int cnt = 0; int sz = w.size(); int x = 0; for (int i = 2; i < sz; i += 2) { if (w[i - 2] < w[i]) x = i / 2; } int y = 0; for (int i = 3; i < sz; i += 2) { if (w[i - 2] < w[i]) y = i / 2; } //debug(w); int xs = (sz + 1) / 2; int ys = sz / 2; while (xs > 1 || ys > 1) { //debug(xs); debug(ys); debug(x); debug(y); cnt++; int nx = x, ny = y; if (y >= x && x > 0) ny--; if (x > y) nx--; if (y < xs - 1) xs--; if (x != 0 && x != ys) ys--; if (x == 0) { swap(nx, ny); swap(xs, ys); } x = nx, y = ny; } return cnt; } int main() { int n; cin >> n; vector<int> a(n); rep(i, n) { cin >> a[i]; a[i]--; } if (n == 2) { cout << 0 << ' ' << 1 << '\n'; return 0; } vector<int> b(n, -1); chmax(b[1], a[0]); chmax(b[n - 2], a[n - 1]); for (int i = 1; i < n - 1; i++) { if (a[i - 1] < a[i + 1]) chmax(b[i + 1], a[i]); else chmax(b[i - 1], a[i]); } vector<vector<int>> v; vector<int> tmp; rep(i, n) { if (b[i] == -1) { if (tmp.size() != 0) v.pb(tmp); tmp.clear(); } else tmp.pb(b[i]); } if (tmp.size() != 0) v.pb(tmp); int ans = 0; for (vector<int> w : v) { chmax(ans, solve2(w)); } cout << ans + 1 << ' ' << v.size() << '\n'; /*int n = 7; rep(_, 1000) { vector<int> v = make(n); bool f = false; rep(i, n - 4) if (v[i] > v[i + 2] && v[i + 2] < v[i + 4]) f = true; if (f) continue; if (solve(v) != solve2(v)) { debug(v); debug(solve(v)); debug(solve2(v)); } }*/ }