제출 #862551

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
862551		Cyber_Wolf	Kutije (COCI21_kutije)	C++17	70 / 70	911 ms	11900 KiB

Main

#include <bits/stdc++.h>
 
using namespace std;
 
#define lg long long 
 
const lg N = 2e5+5;
 

lg par[N], compSize[N];
lg get(lg src)
{
	if(par[src] == src)	return src;
	return par[src] = get(par[src]);
}
 
void join(lg u, lg v)
{
    u = get(u);
    v = get(v);
    if(u == v)    return;
    if(compSize[u] > compSize[v])    swap(u, v);
    par[u] = v;
    compSize[v] += compSize[u];
    return;
}

int main()
{
	lg n, m, q;
	cin >> n >> m >> q;
	for(int i = 1; i <= n; i++)	par[i] = i, compSize[i] = 1;
	for(int i = 0; i < m; i++)
	{
		for(int j = 1; j <= n; j++)
		{
			lg x;
			cin >> x;
			join(x, j);
		}
	}
	while(q--)
	{
		lg a, b;
		cin >> a >> b;
		cout << (get(a) == get(b) ? "DA" : "NE") << '\n';
	}
}
 
/*
-2 -1 -2 -1 1 -2 -2 -2 -1 -2 -1 -2 -1 -1 -1 -1
-2 -1 -2 -1 -2 -2 -2 -2 -2 -2 -2 -2 0 -2 -2 -2
-2 -2 -2 -2 -1 -2 -1 -2 0 -2 -2 -2 -1 -2 -1 -2
2
*/

• Subtask 1: 15 / 15
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 35 / 35