Submission #431395

#	Time	Username	Problem	Language	Result	Execution time	Memory
431395		idk321	Stations (IOI20_stations)	C++17	5 / 100	931 ms	608 KiB

stations

#include "stations.h"
#include <vector>

using namespace std;

const int M = 1000000000;
const int N = 1000;
int in[N];
int out[N];
vector<int> adj[N];
vector<int> labels;

int n, k;

int timer;



void dfs2(int node, int par)
{
    timer++;
    in[node] = timer;

    for (int next : adj[node])
    {
        if (next == par) continue;
        dfs2(next, node);
    }

    out[node] = timer;
}

void dfs(int node, int par, int num)
{
    labels[node] = num;
    for (int next : adj[node])
    {
        if (next == par) continue;
        dfs(next, node, num + 1);
    }
}



std::vector<int> label(int n1, int k1, std::vector<int> u, std::vector<int> v) {
    n = n1;
    k = k1;

	labels.assign(n, 0);


    for (int i = 0; i < n; i++) adj[i].clear();
    for (int i = 0; i < u.size(); i++)
    {
        adj[u[i]].push_back(v[i]);
        adj[v[i]].push_back(u[i]);
    }



    for (int i = 0; i < n; i++)
    {
        if (adj[i].size() == 1)
        {
            dfs(i, -1, 0);
            break;
        }
    }



	return labels;
}



int find_next_station(int s, int t, std::vector<int> c) {

    if (s < t)
    {
        for (int j : c)
        {
            if (j > s) return j;
        }
    } else
    {
        for (int j : c)
        {
            if (j < s) return j;
        }
    }

	return c[0];
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:53:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     for (int i = 0; i < u.size(); i++)
      |                     ~~^~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 0 / 10
• Subtask 5: 0 / 61