Submission #49415

#	Time	Username	Problem	Language	Result	Execution time	Memory
49415		SpaimaCarpatilor	City (JOI17_city)	C++17	0 / 100	172 ms	19480 KiB

Encoder

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

int nr = 0, l[250009], r[250009];
vector < int > v[250009];

void dfs (int nod, int tata)
{
    l[nod] = ++nr;
    for (auto it : v[nod])
        if (it != tata)
            dfs (it, nod);
    r[nod] = nr;
}

void Encode (int N, int A[], int B[])
{
    for (int i=0; i<N; i++)
        v[A[i]].push_back (B[i]);
    dfs (0, -1);
	for (int i=0; i<N; i++)
		Code(i, (l[i] << 18LL) | r[i]);
}

Device

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

void InitDevice()
{

}

int Answer (long long S, long long T)
{
    int lS = (S >> 18), rS = S & ((1 << 18) - 1);
    int lT = (T >> 18), rT = T & ((1 << 18) - 1);
    if (lT <= lS && rS <= rT) return 0;
    if (lS <= lT && rT <= rS) return 1;
	return 2;
}

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