Submission #1008911

#	Time	Username	Problem	Language	Result	Execution time	Memory
1008911		emptypringlescan	City (JOI17_city)	C++17	22 / 100	216 ms	55472 KiB

Encoder

#include <bits/stdc++.h>
using namespace std;
#include "Encoder.h"
vector<int> adj[250005];
long long pre[250005],pos[250005];
int cur=0;
void dfs(int x, int p){
	cur++;
	pre[x]=cur;
	for(int i:adj[x]){
		if(i!=p) dfs(i,x);
	}
	pos[x]=cur;
}
void Encode(int n, int u[], int v[]){
	for(int i=0; i<n-1; i++){
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	dfs(0,-1);
	for(int i=0; i<n; i++){
		Code(i,pre[i]<<18ll|pos[i]);
	}
}

Device

#include <bits/stdc++.h>
using namespace std;
#include "Device.h"
void InitDevice(){
	
}
int Answer(long long a, long long b){
	long long prea=a>>18ll,posa=a^(prea<<18ll);
	long long preb=b>>18ll,posb=b^(preb<<18ll);
	if(preb<=prea&&posa<=posb) return 0;
	else if(prea<=preb&&posb<=posa) return 1;
	return 2;
}

• Subtask 1: 8 / 8
• Subtask 2: 14 / 92