Submission #49421

#	Time	Username	Problem	Language	Result	Execution time	Memory
49421		SpaimaCarpatilor	City (JOI17_city)	C++17	8 / 100	584 ms	55280 KiB

Encoder

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

const int maxN = 250002;
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]),
        v[B[i]].push_back (A[i]);
    dfs (0, -1);
	for (int i=0; i<N; i++)
		Code(i, 1LL * l[i] * maxN + r[i]);
}

Device

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

const int maxN = 250002;

void InitDevice()
{

}

int Answer (long long S, long long T)
{
    long long lS = S / maxN, rS = S % maxN;
    long long lT = T / maxN, rT = T % maxN;
    if (lT <= lS && rS <= rT) return 0;
    if (lS <= lT && rT <= rS) return 1;
	return 2;
}

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