Submission #812178

#	Time	Username	Problem	Language	Result	Execution time	Memory
812178		MyCode	Inside information (BOI21_servers)	C++17	5 / 100	1353 ms	524288 KiB

servers

#include <bits/stdc++.h>

using namespace std;

#define int long long

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr), cout.tie(nullptr);
    int n, k;
    cin >> n >> k;
    set<int> st[n + 1];
    for (int i = 1; i <= n; i++)
        st[i].insert(i);
    int cnt[n + 1];
    for (int i = 1; i <= n; i++)
        cnt[i] = 1;
    for (int q = 0; q < n + k - 1; q++) {
        char t;
        cin >> t;
        if (t == 'S') {
            int a, b;
            cin >> a >> b;
            for (auto x: st[b])
                if (st[a].find(x) == st[a].end())cnt[x]++;
            for (auto x: st[a])
                if (st[b].find(x) == st[b].end())cnt[x]++;
            for (auto x: st[b])
                st[a].insert(x);
            st[b] = st[a];
        } else if (t == 'Q') {
            int a, d;
            cin >> a >> d;
            if (st[a].find(d) == st[a].end())
                cout << "no\n";
            else
                cout << "yes\n";
        } else {
            int a;
            cin >> a;
            if (a > n)
                cout << "0\n";
            else
                cout << cnt[a] << "\n";
        }
    }
    return 0;
}

• Subtask 1: 2.5 / 2.5
• Subtask 2: 2.5 / 2.5
• Subtask 3: 0 / 2.5
• Subtask 4: 0 / 2.5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 12.5
• Subtask 10: 0 / 12.5
• Subtask 11: 0 / 17.5
• Subtask 12: 0 / 17.5