Submission #446870

#	Time	Username	Problem	Language	Result	Execution time	Memory
446870		wiwiho	Inside information (BOI21_servers)	C++14	2.50 / 100	218 ms	524292 KiB

servers

#include <bits/stdc++.h>

#define eb emplace_back

using namespace std;

typedef long long ll;

const int SZ = 120000;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, k;
    cin >> n >> k;

    vector<bitset<SZ>> b(n + 1);
    for(int i = 1; i <= n; i++) b[i].set(i);

    int q = n + k - 1;
    while(q--){

        string s;
        cin >> s;

        assert(s != "C");

        if(s == "S"){
            int u, v;
            cin >> u >> v;
            b[u] |= b[v];
            b[v] |= b[u];
            continue;
        }

        int v, c;
        cin >> v >> c;
        if(b[v][c]) cout << "yes\n";
        else cout << "no\n";

    }

    return 0;
}

• Subtask 1: 2.5 / 2.5
• Subtask 2: 0 / 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