제출 #619845

#제출 시각아이디문제언어결과실행 시간메모리
619845KLPP식물 비교 (IOI20_plants)C++14
0 / 100
1 ms212 KiB
#include "plants.h"
#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)
typedef long long int lld;
#define trav(a,v) for(auto a:v)

int n;
int K;
int arr[1000000];
int order[1000000];
void init(int k, std::vector<int> r) {
	n=r.size();
	K=k;
	rep(i,0,n)arr[i]=r[i];
	if(2*k>n){
		rep(i,0,n)order[i]=-1;
		int cnt=0;
		rep(turn,0,n){
			rep(i,0,n){
				if(arr[i]==0 && order[i]==-1){
					order[i]=cnt;
					cnt++;
					rep(j,1,k){
						arr[(i-j+n)%n]--;
					}
				}
			}
		}
	}
	return;
}
int trial[1000000];
bool visited[1000000];
int compare_plants(int x, int y) {
	if(2*K>n){
		if(order[x]>order[y])return -1;
		return 1;
	}
	rep(i,0,n)trial[i]=arr[i];
	rep(i,0,n)visited[i]=false;
	rep(turn,0,n+1){
		rep(i,0,n){
			if(i!=x && i!=y){
				if(trial[i]==0 && !visited[i]){
					visited[i]=true;
					rep(j,1,K){
						trial[(i-j+n)%n]--;
					}
					if(trial[x]<0 || trial[y]<0){
						rep(j,1,K){
							trial[(i-j+n)%n]++;
						}
						visited[i]=false;
					}else{
						/*cerr<<i<<endl;
						rep(j,0,n)cerr<<trial[j]<<" ";
						cerr<<endl;
						rep(j,0,n)cerr<<visited[j]<<" ";
						cerr<<endl;*/
					}
				}
			}
		}
	}
	if(trial[x]==0 && trial[y]==0)return 0;
	if(trial[x]==0)return 1;
	//cerr<<trial[x]<<" "<<trial[y]<<endl;
	return -1;
}
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