Submission #68748723

Source Code Expand

#include <bits/stdc++.h>

using namespace std;

using LL = long long;
#define endl '\n'
using db = double;
template <class T>
using max_heap = priority_queue<T>;
template <class T>
using min_heap = priority_queue<T, vector<T>, greater<T>>;
struct DSU
{
    std::vector<int> f, siz, bl;
    DSU(int n) : f(n), siz(n, 1), bl(n) { std::iota(f.begin(), f.end(), 0); }
    int leader(int x)
    {
        while (x != f[x])
            x = f[x] = f[f[x]];
        return x;
    }
    bool same(int x, int y) { return leader(x) == leader(y); }
    bool merge(int x, int y)
    {
        x = leader(x);
        y = leader(y);
        if (x == y)
            return false;
        bl[x] += bl[y];
        siz[x] += siz[y];
        f[y] = x;
        return true;
    }
    int size(int x) { return siz[leader(x)]; }
};
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, Q;
    cin >> n >> Q;
    DSU dsu(n + 1);
    vector<int> col(n + 1);
    while (Q--)
    {
        int op;
        cin >> op;
        if (op == 1)
        {
            int u, v;
            cin >> u >> v;
            dsu.merge(u, v);
        }
        else if (op == 2)
        {
            int x;
            cin >> x;
            dsu.bl[dsu.leader(x)] -= col[x];
            col[x] ^= 1;
            dsu.bl[dsu.leader(x)] += col[x];
        }
        else if (op == 3)
        {
            int x;
            cin >> x;
            if (dsu.bl[dsu.leader(x)])
                cout << "Yes" << endl;
            else
                cout << "No" << endl;
        }
    }
    return 0;
}

Submission Info

Submission Time
Task E - Reachability Query
User hialine
Language C++ 20 (gcc 12.2)
Score 450
Code Size 1649 Byte
Status AC
Exec Time 104 ms
Memory 6304 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 450 / 450
Status
AC × 1
AC × 85
Set Name Test Cases
Sample sample_01.txt
All sample_01.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt, test_31.txt, test_32.txt, test_33.txt, test_34.txt, test_35.txt, test_36.txt, test_37.txt, test_38.txt, test_39.txt, test_40.txt, test_41.txt, test_42.txt, test_43.txt, test_44.txt, test_45.txt, test_46.txt, test_47.txt, test_48.txt, test_49.txt, test_50.txt, test_51.txt, test_52.txt, test_53.txt, test_54.txt, test_55.txt, test_56.txt, test_57.txt, test_58.txt, test_59.txt, test_60.txt, test_61.txt, test_62.txt, test_63.txt, test_64.txt, test_65.txt, test_66.txt, test_67.txt, test_68.txt, test_69.txt, test_70.txt, test_71.txt, test_72.txt, test_73.txt, test_74.txt, test_75.txt, test_76.txt, test_77.txt, test_78.txt, test_79.txt, test_80.txt, test_81.txt, test_82.txt, test_83.txt, test_84.txt
Case Name Status Exec Time Memory
sample_01.txt AC 1 ms 3432 KiB
test_01.txt AC 1 ms 3404 KiB
test_02.txt AC 1 ms 3468 KiB
test_03.txt AC 49 ms 3432 KiB
test_04.txt AC 49 ms 3392 KiB
test_05.txt AC 37 ms 3456 KiB
test_06.txt AC 57 ms 3420 KiB
test_07.txt AC 54 ms 3552 KiB
test_08.txt AC 57 ms 3484 KiB
test_09.txt AC 46 ms 3480 KiB
test_10.txt AC 54 ms 3376 KiB
test_11.txt AC 51 ms 3484 KiB
test_12.txt AC 51 ms 3396 KiB
test_13.txt AC 46 ms 3540 KiB
test_14.txt AC 54 ms 3500 KiB
test_15.txt AC 58 ms 3480 KiB
test_16.txt AC 47 ms 3416 KiB
test_17.txt AC 48 ms 3344 KiB
test_18.txt AC 56 ms 3492 KiB
test_19.txt AC 55 ms 3504 KiB
test_20.txt AC 45 ms 3412 KiB
test_21.txt AC 88 ms 6220 KiB
test_22.txt AC 89 ms 6192 KiB
test_23.txt AC 93 ms 6160 KiB
test_24.txt AC 87 ms 6148 KiB
test_25.txt AC 91 ms 6212 KiB
test_26.txt AC 92 ms 6160 KiB
test_27.txt AC 94 ms 6184 KiB
test_28.txt AC 94 ms 6076 KiB
test_29.txt AC 90 ms 6188 KiB
test_30.txt AC 93 ms 6152 KiB
test_31.txt AC 97 ms 6156 KiB
test_32.txt AC 90 ms 6124 KiB
test_33.txt AC 90 ms 6156 KiB
test_34.txt AC 89 ms 6084 KiB
test_35.txt AC 91 ms 6144 KiB
test_36.txt AC 88 ms 6212 KiB
test_37.txt AC 104 ms 6148 KiB
test_38.txt AC 95 ms 6240 KiB
test_39.txt AC 101 ms 6204 KiB
test_40.txt AC 85 ms 6220 KiB
test_41.txt AC 96 ms 6184 KiB
test_42.txt AC 101 ms 6216 KiB
test_43.txt AC 98 ms 6248 KiB
test_44.txt AC 96 ms 6184 KiB
test_45.txt AC 91 ms 6164 KiB
test_46.txt AC 94 ms 6240 KiB
test_47.txt AC 90 ms 6164 KiB
test_48.txt AC 95 ms 6248 KiB
test_49.txt AC 90 ms 6152 KiB
test_50.txt AC 91 ms 6188 KiB
test_51.txt AC 84 ms 6148 KiB
test_52.txt AC 91 ms 6164 KiB
test_53.txt AC 98 ms 6208 KiB
test_54.txt AC 96 ms 6220 KiB
test_55.txt AC 97 ms 6160 KiB
test_56.txt AC 95 ms 6248 KiB
test_57.txt AC 88 ms 6152 KiB
test_58.txt AC 90 ms 6168 KiB
test_59.txt AC 95 ms 6216 KiB
test_60.txt AC 98 ms 6264 KiB
test_61.txt AC 63 ms 6164 KiB
test_62.txt AC 75 ms 6156 KiB
test_63.txt AC 67 ms 6184 KiB
test_64.txt AC 71 ms 6080 KiB
test_65.txt AC 67 ms 6164 KiB
test_66.txt AC 70 ms 6148 KiB
test_67.txt AC 68 ms 6176 KiB
test_68.txt AC 69 ms 6156 KiB
test_69.txt AC 68 ms 3692 KiB
test_70.txt AC 82 ms 4884 KiB
test_71.txt AC 67 ms 3720 KiB
test_72.txt AC 88 ms 5816 KiB
test_73.txt AC 81 ms 4868 KiB
test_74.txt AC 77 ms 5412 KiB
test_75.txt AC 77 ms 4616 KiB
test_76.txt AC 59 ms 4360 KiB
test_77.txt AC 93 ms 6140 KiB
test_78.txt AC 94 ms 6304 KiB
test_79.txt AC 96 ms 6164 KiB
test_80.txt AC 94 ms 6152 KiB
test_81.txt AC 95 ms 6076 KiB
test_82.txt AC 97 ms 6240 KiB
test_83.txt AC 94 ms 6180 KiB
test_84.txt AC 97 ms 6216 KiB