Submission #877218

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
877218	2023-11-23 03:57:58	hotboy2703	Joker (BOI20_joker)	C++14	49 / 100	2004 ms	14812 KiB

Joker

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#include<bits/stdc++.h>
using namespace std;
#define pll pair <ll,ll>
#define fi first
#define se second
using ll = int;
ll n,m,q;
namespace DSU{
    ll dsu[200100];
    ll rev[200100];
    void init(){
        memset(dsu,-1,sizeof dsu);
        memset(rev,-1,sizeof rev);
    }
    ll f(ll x){
        if (dsu[x] < 0)return x;
        return (dsu[x] = f(dsu[x]));
    }
    void m(ll x,ll y){
        if (x == -1 || y == -1)return;
        if (dsu[x] > dsu[y])swap(x,y);
        dsu[x] += dsu[y];
        dsu[y] = x;
    }
    bool join(ll x,ll y){
        x = f(x),y = f(y);
        if (x==y)return 0;
        if (rev[x] == y)return 1;
        else{
            m(x,rev[y]);
 
 
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• Subtask 1: 6 / 6
• Subtask 2: 8 / 8
• Subtask 3: 25 / 25
• Subtask 4: 10 / 10
• Subtask 5: 0 / 22
• Subtask 6: 0 / 29