Submission #391405

#	Time	Username	Problem	Language	Result	Execution time	Memory
391405		ali_tavakoli	Pipes (CEOI15_pipes)	C++14	Compilation error	0 ms	0 KiB

pipes

//In The Name Of Allah
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
#define pb push_back
#define F first
#define S second
//#pragma GCC optimize("Ofast")

const int maxn = 1e5 + 5, maxlog = 19;

int n, m, pr[maxn], x, y;

int getpar(int v)
{
    if(pr[v] == 0)
        return pr[v] = v;
    
    return (v == pr[v] ? v : pr[v] = getpar(pr[v]));
}

void un(int v, int u)
{
    v = getpar(v);
    u = getpar(u);
    if(u != v)
        par[u] = v;
}

int main()
{
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n >> m;

    for(int i = 0; i < m; i++)
    {
        cin >> x >> y;
        un(x, y);
    }

    cin.seekg(0);

    for(int i = 0; i < m; i++)
    {
        cin >> x >> y;
    }
}

/*
10 11
1 7
1 8
1 6
2 8
6 7
5 8
2 5
2 3
2 4
3 4
10 9
*/

Compilation message (stderr)

pipes.cpp: In function 'void un(int, int)':
pipes.cpp:28:9: error: 'par' was not declared in this scope; did you mean 'pr'?
   28 |         par[u] = v;
      |         ^~~
      |         pr