Submission #676094

#	Time	Username	Problem	Language	Result	Execution time	Memory
676094		ghostwriter	Bubble Sort 2 (JOI18_bubblesort2)	C++17	38 / 100	1463 ms	1928 KiB

bubblesort2

#include "bubblesort2.h"
// #pragma GCC optimize ("Ofast")
// #pragma GCC target ("avx2")
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
    #include <debug.h>
	#include "grader.cpp"
#else
    #define debug(...)
#endif
#define ft front
#define bk back
#define st first
#define nd second
#define ins insert
#define ers erase
#define pb push_back
#define pf push_front
#define _pb pop_back
#define _pf pop_front
#define lb lower_bound
#define ub upper_bound
#define mtp make_tuple
#define bg begin
#define ed end
#define all(x) (x).bg(), (x).ed()
#define sz(x) (int)(x).size()
// #define int long long
typedef long long ll; typedef unsigned long long ull;
typedef double db; typedef long double ldb;
typedef pair<int, int> pi; typedef pair<ll, ll> pll;
typedef vector<int> vi; typedef vector<ll> vll; typedef vector<pi> vpi; typedef vector<pll> vpll;
typedef string str;
#define FOR(i, l, r) for (int i = (l); i <= (r); ++i)
#define FOS(i, r, l) for (int i = (r); i >= (l); --i)
#define FRN(i, n) for (int i = 0; i < (n); ++i)
#define FSN(i, n) for (int i = (n) - 1; i >= 0; --i)
#define EACH(i, x) for (auto &i : (x))
#define WHILE while
template<typename T> T gcd(T a, T b) { T d2 = (a | b) & -(a | b); a /= d2; b /= d2; WHILE(b) { a = a % b; swap(a, b); } return a * d2; }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
void _assert(bool statement) { if (statement) return; cerr << "\n>> Assertion failed!\n"; exit(0); }
void _assert(bool statement, const str &message) { if (statement) return; cerr << "\n>> Assertion failed: " << message << '\n'; exit(0); }
void _error(const str &message) { cerr << "\n>> Error: " << message << '\n'; exit(0); }
#define file "TEST"
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
ll rand(ll l, ll r) { return uniform_int_distribution<ll>(l, r)(rd); }
/*
----------------------------------------------------------------
    END OF TEMPLATE
----------------------------------------------------------------
    Tran The Bao - ghostwriter
    Training for VOI23 gold medal
----------------------------------------------------------------
    GOAT
----------------------------------------------------------------
*/
namespace subtask12 {
	const int MAXN = 16000;
	int N, Q;
	vi A, X, V, d[MAXN];
	bool checkCondition(vi A, vi X, vi V) {
		subtask12::A = A;
		subtask12::X = X;
		subtask12::V = V;
		return sz(A) <= 8000 && sz(X) <= 8000;
	}
	void compress() {
		vi A1;
		EACH(i, A) A1.pb(i);
		EACH(i, V) A1.pb(i);
		sort(all(A1));
		EACH(i, A) i = lb(all(A1), i) - A1.bg();
		EACH(i, V) i = lb(all(A1), i) - A1.bg();
	}
	int solve() {
		int rs = 0, maxx = 0, num = N;
		FRN(i, N) d[A[i]].pb(i);
		FRN(i, MAXN) {
			if (d[i].empty()) continue;
			EACH(j, d[i]) {
				rs = max(rs, num - N + max(maxx, j));
				--num;
				maxx = max(maxx, j);
			}
			d[i].clear();
		}
		return rs;
	}
	vi countScans() {
		N = sz(A);
		Q = sz(X);
		compress();
		vi ANS(Q);
		FRN(j, Q) {
			A[X[j]] = V[j];
			ANS[j] = solve();
		}
		return ANS;
	}
}
std::vector<int> countScans(std::vector<int> A,std::vector<int> X,std::vector<int> V){
	if (subtask12::checkCondition(A, X, V)) return subtask12::countScans();
	return vi(0, 0);
}
/*
4 2
1 2 3 4
0 3
2 1
*/

• Subtask 1: 17 / 17
• Subtask 2: 21 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40