Submission #391033

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
391033	2021-04-17 15:27:12	qwerasdfzxcl	Stations (IOI20_stations)	C++14	100 / 100	1138 ms	784 KiB

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#include "stations.h"
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
vector<int> adj[1010], ans;
bool visited[1010];
int cur=0;
void dfs(int s, int dep){
    if (!(dep&1)) ans[s] = cur++;
    visited[s] = 1;
    for (auto &v:adj[s]) if (!visited[v]){
        dfs(v, dep+1);
    }
    if (dep&1) ans[s] = cur++;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
    for (int i=0;i<n;i++){
        adj[i].clear(); visited[i] = 0;
    }
    ans.clear();
    ans.resize(n);
    cur = 0;
    for (int i=0;i<n-1;i++){
        adj[u[i]].push_back(v[i]);
        adj[v[i]].push_back(u[i]);
    }
    dfs(0, 0);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 61 / 61