Submission #1051003

# Submission time Handle Problem Language Result Execution time Memory
1051003 2024-08-09T17:59:44 Z TahirAliyev Comparing Plants (IOI20_plants) C++17
0 / 100
1 ms 8792 KB
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
#define pii pair<int, int>
#define ll long long
#define oo 1e9

const int MAX = 2e5 + 5;

struct ST{
	pii tree[4 * MAX]; 
	int lazy[4 * MAX];
	void relax(int node, int l, int r){
		tree[node].first += lazy[node];
		if(l != r){
			lazy[2 * node] += lazy[node];
			lazy[2 * node + 1] += lazy[node];
		}
		lazy[node] = 0;
	}
	void update(int node, int l, int r, int ul, int ur, int val){
		relax(node, l, r);
		if(ur < l || r < ul) return;
		if(ul <= l && r <= ur){
			lazy[node] += val;
			relax(node, l, r);
			return;
		}
		int mid = (l + r) / 2;
		update(2 * node, l, mid, ul, ur, val);
		update(2 * node + 1, mid + 1, r, ul, ur, val);
		tree[node] = min(tree[2 * node], tree[2 * node + 1]);
	}
	pii ask(int node, int l, int r, int ql, int qr){
		if(qr < l || r < ql) return {oo, 0};
		relax(node, l, r);
		if(ql <= l && r <= qr) return tree[node];
		int mid = (l + r) / 2;
		return min(ask(2 * node, l, mid, ql, qr), ask(2 * node + 1, mid + 1, r, ql, qr));
	}
};

int n;
ST st;
set<int> s;
set<pii> dif;
int id[MAX];
void update(int l, int r, int val){
	if(r < l){
		st.update(1, 0, n - 1, l, n - 1, val);
		st.update(1, 0, n - 1, 1, r, val);
	}
	else st.update(1, 0, n - 1, l, r, val);
}

void add(int i){
	if(!s.size()){
		s.insert(i);
		dif.insert({0, i});
		return;
	}
	s.insert(i);
	auto itr = s.find(i);
	auto prv = itr, nxt = itr;
	if(itr == s.begin()) prv = --s.end();
	else prv = prev(itr);
	if(itr == prev(s.end())) nxt = s.begin();
	else nxt = next(itr);
	dif.erase({(*nxt - *prv + n) % n, *nxt});
	dif.insert({(*nxt - *itr + n) % n, *nxt});
	dif.insert({(*itr - *prv + n) % n, *itr});
}

void rem(int i){
	if(s.size() == 1){
		s.erase(i);
		return;
	}
	auto itr = s.find(i);
	auto prv = itr, nxt = itr;
	if(itr == s.begin()) prv = --s.end();
	else prv = prev(itr);
	if(itr == prev(s.end())) nxt = s.begin();
	else nxt = next(itr);
	dif.insert({(*nxt - *prv + n) % n, *nxt});
	dif.erase({(*nxt - *itr + n) % n, *nxt});
	dif.erase({(*itr - *prv + n) % n, *itr});
	s.erase(i);
}

void init(int k, vector<int> r) {
	n = r.size();
	for(int i = 0; i < n; i++){
		if(!r[i]){
			s.insert(i);
			st.update(1, 0, n - 1, i, i, oo);
		} 
		else st.update(1, 0, n - 1, i, i, r[i]);
	}
	for(auto itr = s.begin(); itr != s.end(); itr++){
		dif.insert({(*itr - ((itr != s.begin())? *prev(itr) : *s.rbegin()) + n) % n, *itr});
	}
	int t = n;
	while(s.size()){
		int f = dif.rbegin()->second;
		cout << f << ' ';
		if(dif.rbegin()->first < k && dif.rbegin()->first){
			rem(f);
			continue;
		}
		rem(f);
		int l = f - k + 1;
		if(l <= 0) l += n;
		id[f] = t--;
		update(l, f - 1, -1);
		while(st.ask(1, 0, n - 1, 0, n - 1).first == 0){
			int a = st.ask(1, 0, n - 1, 0, n - 1).second;
			update(a, a, oo);
			add(a);
		}
	}
	// for(int i = 0; i < n; i++) cout << id[i] << ' ';
	// cout << '\n';
}

int compare_plants(int x, int y) {
	x++, y++;
	if(id[x] > id[y]) return 1;
	else return -1;
}
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 8536 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 8792 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 8792 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 8536 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 8540 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 8540 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 8536 KB Output isn't correct
2 Halted 0 ms 0 KB -