Submission #582820

#	Time	Username	Problem	Language	Result	Execution time	Memory
582820		LucaIlie	Stations (IOI20_stations)	C++17	0 / 100	3057 ms	2097152 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>

#define MAX_N 1000

using namespace std;

int l;
vector<int> edges[MAX_N];
vector<int> labels;

void dfs( int u, int p, int d ) {
    if ( d == 0 )
        labels[u] = l * 2;
    l++;
    for ( int v: edges[u] ) {
        if ( v != p )
            dfs( v, u, 1 - d );
    }
    if ( d == 1 )
        labels[u] = l * 2 + 1;
    if ( edges[u].size() > 1 )
        l++;
}

vector<int> label( int n, int k, vector<int> u, vector<int> v ) {

    for ( int i = 0; i < n - 1; i++ ) {
        edges[u[i]].push_back( v[i] );
        edges[v[i]].push_back( u[i] );
    }

    labels.resize( n );
    l = 0;
    dfs( 0, -1, 0 );

    return labels;
}

int find_next_station( int s, int t, vector<int> c ) {
    int l, r, d, i;

    return c[0];
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:41:9: warning: unused variable 'l' [-Wunused-variable]
   41 |     int l, r, d, i;
      |         ^
stations.cpp:41:12: warning: unused variable 'r' [-Wunused-variable]
   41 |     int l, r, d, i;
      |            ^
stations.cpp:41:15: warning: unused variable 'd' [-Wunused-variable]
   41 |     int l, r, d, i;
      |               ^
stations.cpp:41:18: warning: unused variable 'i' [-Wunused-variable]
   41 |     int l, r, d, i;
      |                  ^

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