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why WA ?? plis help...
here's my code ..

#include <cstdio>
#include <algorithm>
#include <queue>
#include <cmath>


using namespace std;

int parent[100000];

void init(int num)
{
for(int i=1;i<=num+1;i++) parent =i;
}

int find_set(int num)
{
if(num!=parent[num]) parent[num]=find_set(parent[num ...