Submission #984071

#	Time	Username	Problem	Language	Result	Execution time	Memory
984071		phoenix0423	Comparing Plants (IOI20_plants)	C++17	14 / 100	4048 ms	10412 KiB

plants

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define pb push_back
#define eb emplace_back
const int maxn = 2e5 + 5;
const int INF = 1e9;
#include "plants.h"
int rk[maxn];
int n, k;
vector<int> r;

void init(int _k, std::vector<int> _r) {
	r = _r, k = _k;
	n = r.size();
	for(auto x : _r) r.pb(x);
	auto del = [&](int x) -> void {
		for(int i = max(0, x - k + 1); i < x; i++) r[i] --;
		x += n;
		for(int i = x - k + 1; i < x; i++) r[i] --;
	};
	for(int rd = 0; rd < n; rd++){
		int csc = 0;
		for(int i = 0; i < 2 * n; i++){
			if(r[i] == 0){
				if(csc >= n - k){
					del(i % n);
					rk[i % n] = rd;
					r[i] = r[(i + n) % (2 * n)] = INF;
					break;
				}
				csc = 0;
			}
			else csc++;
		}
	}
	return;
}

int compare_plants(int x, int y) {\
	return rk[x] < rk[y] ? 1 : -1;
}

• Subtask 1: 0 / 5
• Subtask 2: 14 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25