제출 #1014699

#제출 시각아이디문제언어결과실행 시간메모리
1014699Unforgettablepl식물 비교 (IOI20_plants)C++17
5 / 100
70 ms14928 KiB
#include <bits/stdc++.h>
using namespace std;

vector<int> limit;
vector<int> p;

void init(int k, std::vector<int> r) {
	int n = r.size();
	p=r;
	limit.resize(n);
	vector<bool> visited(n);
	function<int(int,int)> dfs = [&](int x,int type){
		if(r[x]!=type)return x;
		if(visited[x])return limit[x];
		visited[x] = true;
		return limit[x] = dfs((x+1)%n,type);
	};
	for(int i=0;i<n;i++)dfs(i,r[i]);
}

int compare_plants(int x, int y) {
	if(x>y)return -compare_plants(y,x);
	if(limit[x]<x or y<=limit[x]){
		if(p[x])return -1;
		else return 1;
	}
	if(x<=limit[y] and limit[y]<y){
		if(p[y])return 1;
		else return -1;
	}
	return 0;
}
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