Submission #208846

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
208846	2020-03-12 09:50:14	anonymous	Werewolf (IOI18_werewolf)	C++14	100 / 100	1656 ms	131044 KiB

werewolf

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#include "werewolf.h"
#include <vector>
#include <utility>
#include <algorithm>
#define MAXN 200005
using namespace std;
class DSU { //1 indexed
    int par[MAXN], sz;
    vector<int> T[MAXN];
public:
    int anc[MAXN][20], ID[MAXN][2], seq = 1;
    int Find(int x) {
        return(par[x] == x ? x : par[x] = Find(par[x]));
    }
    void Union(int x, int y) {
        int p1 = Find(x), p2 = Find(y);
        if (p1 == p2) {return;}
        if (!anc[p1][0]) {
            anc[p1][0]=p2;
            T[p2].push_back(p1);
        }
        par[p1]=p2;
    }
    void Init(int n) {
        sz = n;
        for (int i=1; i <= n; i++) {
            par[i]=i;
        }
    }
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 34 / 34
• Subtask 4: 51 / 51