Cod sursa(job #2227873)

Utilizator inquisitorAnders inquisitor Data 2 august 2018 09:28:04
Problema Paduri de multimi disjuncte Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.32 kb
#include <cstdio>
#pragma GCC optimize("O1")
#define BUFFER_SIZE 1400000

int parent[100001], rank[100001], p = -1;

char buffer[BUFFER_SIZE];

__attribute__((always_inline)) int get_int()
{
    int number = 0;

    for(++p; buffer[p] > 47; ++p)
    {
        number = number * 10 + buffer[p] - 48;
    }

    return number;
}

__attribute__((always_inline)) int Find(int x)
{
    while(parent[x] != x)
    {
        x = parent[x];
    }

    return x;
}

int main()
{
    freopen("disjoint.in", "r", stdin);
    freopen("disjoint.out", "w", stdout);

    fread(buffer, 1, BUFFER_SIZE, stdin);

    int sets = get_int(), queries = get_int(), q = -1;

    for(int i = 1; i <= sets; ++i)
    {
        parent[i] = i;
    }

    for(int i = 1; i <= queries; ++i)
    {
        int task = get_int(), x = get_int(), y = get_int();

        if(task == 1)
        {
            parent[Find(y)] = Find(x);
        }
        else
        {
            if(Find(x) == Find(y))
            {
                buffer[++q] = 68;
                buffer[++q] = 65;
            }
            else
            {
                buffer[++q] = 78;
                buffer[++q] = 85;
            }

            buffer[++q] = 10;
        }
    }

    buffer[++q] = 0;

    puts(buffer);

    return 0;
}