Submission #427067

#	Time	Username	Problem	Language	Result	Execution time	Memory
427067		jamezzz	City (JOI17_city)	C++17	22 / 100	604 ms	41724 KiB

Encoder

#include "Encoder.h"
#include <bits/stdc++.h>
using namespace std;

#define sf scanf
#define pf printf
#define fi first
#define se second
#define pb emplace_back
#define sz(x) (int)x.size()
#define all(x) x.begin(),x.end()
typedef long long ll;
typedef pair<int,int> ii;
#define maxn 250005

ll pre[maxn],pst[maxn],cnt;
vector<int> AL[maxn];

void dfs(int u){
	pre[u]=cnt++;
	for(int v:AL[u]){
		if(pre[v]==-1)dfs(v);
	}
	pst[u]=cnt-1;
}

void Encode(int n,int a[],int b[]){
	memset(pre,-1,sizeof pre);
	for(int i=0;i<n-1;++i){
		AL[a[i]].pb(b[i]);
		AL[b[i]].pb(a[i]);
	}
	dfs(0);
	for(int i=0;i<n;++i){
		bitset<36> bs((pre[i]<<18)+pst[i]);
		Code(i,(pre[i]<<18)+pst[i]);
	}
}

Device

#include "Device.h"
#include <bits/stdc++.h>
using namespace std;

#define sf scanf
#define pf printf
#define fi first
#define se second
#define pb emplace_back
#define sz(x) (int)x.size()
#define all(x) x.begin(),x.end()
typedef long long ll;
typedef pair<int,int> ii;

int ones=(1<<18)-1;

void InitDevice(){
}

int Answer(ll S, ll T){
	ll pstS=S&ones,pstT=T&ones;
	S>>=18;T>>=18;
	if(T<=S&&S<=pstT)return 0;
	if(S<=T&&T<=pstS)return 1;
	return 2;
}

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