Submission #730060

#	Time	Username	Problem	Language	Result	Execution time	Memory
730060		danikoynov	기지국 (IOI20_stations)	C++14	10 / 100	789 ms	756 KiB

stations

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

const int maxn = 1010;
vector < int > g[maxn], order, my_labels;
int in[maxn], out[maxn], timer, par[maxn];
void dfs(int v, int p)
{

    in[v] = timer ++;
    par[v] = p;
    order.push_back(v);
    for (int u : g[v])
    {
        if (u == p)
            continue;
        dfs(u, v);
    }
    out[v] = timer;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v)
{
    for (int i = 0; i < n; i ++)
    {
        g[i].clear();
    }
    timer = 0;
    order.clear();
    my_labels.clear();
    for (int i = 0; i < v.size(); i ++)
    {
        g[u[i]].push_back(v[i]);
        g[v[i]].push_back(u[i]);
    }
    my_labels.resize(n);

    dfs(0, 0);
    for (int i = 0; i < n; i ++)
    {
        my_labels[i] = in[i] * 1000 + out[i];
    }


    return my_labels;
}

int used[maxn];
int find_next_station(int s, int t, vector<int> c)
{
    ///return 0;
    int in_s = s / 1000, out_s = s % 1000;
    int in_t = t / 1000, out_t = t % 1000;
    int par_s = -1;
    for (int i = 0; i < c.size(); i ++)
    {
        int u = c[i];
        int in_u = u / 1000, out_u = u % 1000;
        if (in_u <= in_s && out_u >= out_s)
        {
            par_s = u;
        }
        else
        {

            if (in_u <= in_t && out_u >= out_t)
            {
                ///cout << u << endl;
                return u;
            }
        }
    }
    return par_s;
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:31:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for (int i = 0; i < v.size(); i ++)
      |                     ~~^~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:55:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |     for (int i = 0; i < c.size(); i ++)
      |                     ~~^~~~~~~~~~

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