Submission #427164

#	Time	Username	Problem	Language	Result	Execution time	Memory
427164		lyc	City (JOI17_city)	C++14	22 / 100	597 ms	53528 KiB

Encoder

#include "Encoder.h"

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

#define TRACE(x) cerr << #x << " :: " << x << endl
#define _ << " " <<
#define SZ(x) ((int)(x).size())
#define ALL(x) (x).begin(),(x).end()
#define FOR(i,a,b) for(int i=(a);i<=(b);++i)
#define RFOR(i,a,b) for(int i=(a);i>=(b);--i)
typedef long long ll;
typedef pair<int,int> ii;

const int mxN = 250001;

int N;
vector<int> al[mxN];

int pre[mxN], pst[mxN], cnt;

void dfs(int u, int p) {
    pre[u] = cnt++;
    for (int& v : al[u]) if (v != p) {
        dfs(v,u);
    }
    pst[u] = cnt;
    //TRACE(u _ pre[u] _ pst[u]);
}

void Encode(int N, int A[], int B[])
{
    FOR(i,0,N-2){
        al[A[i]].push_back(B[i]);
        al[B[i]].push_back(A[i]);
    }

    dfs(0,-1);

	for (int i = 0; i < N; ++i) {
		Code(i, (ll)pre[i] | ((ll)pst[i]<<18));
	}
}

Device

#include "Device.h"

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

#define TRACE(x) cerr << #x << " :: " << x << endl
#define _ << " " <<
#define SZ(x) ((int)(x).size())
#define ALL(x) (x).begin(),(x).end()
#define FOR(i,a,b) for(int i=(a);i<=(b);++i)
#define RFOR(i,a,b) for(int i=(a);i>=(b);--i)
typedef long long ll;
typedef pair<int,int> ii;

const int MN = 1e6+5;
const int mod = 1e9+7;

void InitDevice()
{

}

int Answer(long long S, long long T)
{

    int a1 = S&((1<<18)-1), a2 = S>>18;
    int b1 = T&((1<<18)-1), b2 = T>>18;

    //TRACE(a1 _ a2 _ b1 _ b2);
    if (a2 <= b1 || b2 <= a1) return 2;
    if (a1 < b1 && b2 <= a2) return 1;
	return 0;
}

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