Submission #934118

#	Time	Username	Problem	Language	Result	Execution time	Memory
934118		Saul0906	City (JOI17_city)	C++14	8 / 100	296 ms	43956 KiB

Encoder

#include <bits/stdc++.h>
#include "Encoder.h"
#define rep(a,b,c) for(int a=b; a<c; a++)
#define repa(a,b) for(auto a:b)
#define ll long long
#define pb push_back

using namespace std;

const int lim=3e5+5;
ll tim=0, tin[lim], tout[lim];
vector<int> ady[lim];
void dfs(int u, int p){
	tin[u]=tim;
	repa(v,ady[u]){
		if(v!=p) dfs(v,u);
	}
	tout[u]=tim++;
}

void Encode(int N, int *A, int *B){
	rep(i,0,N-1){
		ady[A[i]].pb(B[i]);
		ady[B[i]].pb(A[i]);
	}
	dfs(0,-1);
	rep(i,0,N){
		ll x=abs(tout[i]-125000);
		x<<=17;
		x+=abs(tin[i]-125000);
		x^=(ll)(tin[i]<=125000)<<34;
		x^=(ll)(tout[i]<=125000)<<34;
		if(tin[i]==tout[i] && tin[i]<=125000) x|=(ll)(tout[i]<=125000)<<34;
		//cout<<i<<" "<<x<<" "<<(abs(tin[i]-125000))<<" "<<(abs(tout[i]-125000))<<endl;
		Code(i,x);
	}
}

Device

#include <bits/stdc++.h>
#include "Device.h"
#define rep(a,b,c) for(int a=b; a<c; a++)
#define repa(a,b) for(auto a:b)
#define ll long long

using namespace std;

void InitDevice(){
	return;
}

const ll md=1<<17;

int Answer(ll S, ll T){
	ll a, b, c, d;
	a=(S%md);
	S>>=17;
	b=(S%md);
	S>>=17;
	if(S&1){
		if(a!=b){
			a=125000-a;
			b=125000+b;
		}else{
			a=125000-a;
			b=125000-b;
		}
	}else{
		if(a>b){
			a=125000-a;
			b=125000-b;
		}else{
			a=125000+a;
			b=125000+b;
		}
	}
	c=(T%md);
	T>>=17;
	d=(T%md);
        T>>=17;
        if(T&1){
                if(c!=d){
			c=125000-c;
                	d=125000+d;
		}else{
                        c=125000-c;
                        d=125000-d;
		}
        }else{
                if(c>d){
                        c=125000-c;
                        d=125000-d;
                }else{
                        c=125000+c;
                        d=125000+d;
		}
	}
	if(a<=c && d<=b) return 1;
	if(c<=a && b<=d) return 0;
	return 2;
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 92