Submission #1147826

#	Time	Username	Problem	Language	Result	Execution time	Memory
1147826		FaresSTH	Stations (IOI20_stations)	C++20	Compilation error	0 ms	0 KiB

stations

#include "bits/stdc++.h"
using namespace std;
#define int long long
#define mp make_pair
#define S second
#define F first
vector<int> adj[1000];
int dt[1000], t;

void dfs(int i) {
    dt[i] = ++t;
    for (int j : adj[i]) {
        if (dt[j]) continue;
        dfs(j);
    }
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
    for (int i = 0; i < n - 1; i++) {
        adj[u[i]].push_back(v[i]);
        adj[v[i]].push_back(u[i]);
    }
    int rt; for (int i = 0; i < n; i++) if (adj[i].size() == 1) rt = i;
    dfs(rt); vector<int> res;
    for (int i = 0; i < n; i++) {
        res.push_back(dt[i] - 1);
        adj[i].clear();
        dt[i] = 0;
    }
    return res;
}

int find_next_station(int s, int t, vector<int> c) {
    int res;
    if (s < t) for (int i : c) if (i > s) res = i;
    else for (int i : c) if (i < s) res = i;
    return res;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cc9Hctrz.o: in function `main':
stub.cpp:(.text.startup+0x2d7): undefined reference to `label(int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
/usr/bin/ld: stub.cpp:(.text.startup+0x4fc): undefined reference to `find_next_station(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status