Submission #1039855

#	Time	Username	Problem	Language	Result	Execution time	Memory
1039855		amirhoseinfar1385	Comparing Plants (IOI20_plants)	C++17	0 / 100	4048 ms	100260 KiB

plants

#include "plants.h"
#include<bits/stdc++.h>
using namespace std;
const int maxn=5000+10;
int all[maxn],tr[maxn],res[maxn][maxn],fake[maxn];
int k,n,vis[maxn],visa[maxn];
vector<int>adj[maxn];

void clear(){
	for(int i=0;i<n;i++){
		visa[i]=0;
	}
}

void isc(int u,int av){
	visa[u]=1;
	res[av][u]=1;
	for(auto x:adj[u]){
		if(visa[x]==0){
			isc(x,av);
		}
	}
}

void init(int k_, std::vector<int> r) {
	k=k_;
	n=(int)r.size();
	for(int i=0;i<n;i++){
		all[i]=r[i];
	}
	for(int i=0;i<n;i++){
		fake[i]=all[i];
	}
	for(int i=0;i<n;i++){
		vector<int>tof;
		for(int j=0;j<n;j++){
			if(fake[j]==0){
				tof.push_back(j);
			}
		}
		vector<int>tofy;
		for(int j=(int)tof.size()-1;j>0;j--){
			if(tof[j]-tof[j-1]>=k){
				tofy.push_back(tof[j]);
			}else{
				adj[tof[j-1]].push_back(tof[j]);
			}
		}
		if((tof[0]-tof.back()+n)%n>=k||(int)tof.size()==1){
			tofy.push_back(tof[0]);
		}
		else{
			adj[tof.back()].push_back(tof[0]);
		}
		for(int h=1;h<=k-1;h++){
			fake[(tofy.back()-h+n)%n]--;
			if(vis[(tofy.back()-h+n)%n]==0){
				adj[tofy.back()].push_back((tofy.back()-h+n)%n);
			}
		}
		vis[tofy.back()]=1;
		fake[tofy.back()]=-1;
	}
	for(int i=0;i<n;i++){
		clear();
		isc(i,i);
	}
}

int compare_plants(int x, int y) {
	if(res[x][y]){
		return 1;
	}
	if(res[y][x]){
		return -1;
	}
	return 0;
}

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