Submission #1311154

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311154		ayathk	Stations (IOI20_stations)	C++20	Compilation error	0 ms	0 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define fi first 
#define se second
#define all(a) a.begin(), a.end()

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	vector<int> labels(n);
    vector <vector <int>> adj(n);
	for (int i = 0; i < n - 1; i++) {
        adj[u[i]].push_back(v[i]);
        adj[v[i]].push_back(u[i]);
	}

    queue <int> t;
    for(int i = 0;i < n;i++){
        if(adj[i].size() == 1){
            t.push(i);
            break;
        }
    }

    int cnt = 0;
    vector <bool> vis(n,0);
    while(!t.empty()){
        int f = t.front();
        t.pop();
        vis[f] = 1;
        labels[f] = cnt;
        for(int i : adj[f]){
            if(vis[i])continue;
            t.push(i);
        }
        cnt++;
    }
	return labels;
}

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

    if(t > s){
        return max(c[0], c[1]);
    }
    return min(c[0],c[1]);
}

/*signed main(){
    vector <int> a = label(5, 8 ,{4,1,2,3,0}, {0,4,0,2,2});
    for(int i : a){
        cout<<i<<' ';
    }
}*/

Compilation message (stderr)

/usr/bin/ld: /tmp/ccAR6jT8.o: in function `main':
stub.cpp:(.text.startup+0x2b4): 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+0x4ce): undefined reference to `find_next_station(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status