Submission #442061

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
442061	2021-07-07 00:56:31	Dormi	Keys (IOI21_keys)	C++17	100 / 100	1868 ms	173612 KiB

keys

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#include "bits/stdc++.h"
#include "keys.h"
using namespace std;
using ll = long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
template<typename T>
int sz(const T &a){return int(a.size());}
const int MN=3e5+1;
struct dsu {
    pii t[MN];
    void reset(int n) {
        for (int i = 0; i <= n; i++)t[i] = {i, 1};
    }
    int find(int a) {
        if (t[a].first == a)return a;
        return t[a].first = find(t[a].first);
    }
    bool uni(int a, int b) {
        int ap = find(a), bp = find(b);
        if (ap == bp)return false;
        if (t[ap].second < t[bp].second)swap(ap, bp);
        t[bp].first = ap;
        t[ap].second += t[bp].second;
        return true;
    }
}cn,cc;
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 17 / 17
• Subtask 4: 30 / 30
• Subtask 5: 33 / 33