Submission #1220580

#	Time	Username	Problem	Language	Result	Execution time	Memory
1220580		LeonidCuk	Werewolf (IOI18_werewolf)	C++20	Compilation error	0 ms	0 KiB

werewolf

#include <bits/stdc++.h>
#include "werewolf.h"
using namespace std;
struct krt
{
    vector<vector<int>>g,lca;
    vector<int>dsu,el,er;
    int timer=0;
    int vfind(int a)
    {
        if(a==dsu[a])return a;
        return dsu[a]=vfind(dsu[a]);
    }
    void kmerge(int a,int b,bool k)
    {
        int a1=vfind(a),b1=vfind(b);
        if(a1!=b1)
        {
            if(a1>b1&&k)swap(a1,b1);
            else if(k==0&&a1<b1)swap(a1,b1);
            dsu[a1]=b1;
            g[b1].push_back(a1);
        }
    }
    void dfs(int a,int b)
    {
        el[a]=timer;timer++;
        lca[a][0]=b;
        for(int i=1;i<20;i++)
        {
            lca[a][i]=lca[lca[a][i-1]][i-1];
        }
        for(auto i:g[a])
        {
            dfs(i,a);
        }
        er[a]=timer-1;
    }
    krt(int n)
    {
        dsu.resize(n);
        g.resize(n);
        lca.resize(n,vector<int>(20));
        el.resize(n);
        er.resize(n);
        for(int i=0;i<n;i++)dsu[i]=i;
    }
};

Compilation message (stderr)

/usr/bin/ld: /tmp/ccBeJ5gA.o: in function `main':
grader.cpp:(.text.startup+0x3aa): undefined reference to `check_validity(int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status