Submission #446877

#	Time	Username	Problem	Language	Result	Execution time	Memory
446877		wiwiho	Inside information (BOI21_servers)	C++14	5 / 100	442 ms	3944 KiB

servers

#include <bits/stdc++.h>

#define eb emplace_back
#define mp make_pair
#define F first
#define S second

using namespace std;

typedef long long ll;

using pii = pair<int, int>;

int n, k;
const int SZ = 4001;

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

    cin >> n >> k; 
    assert(n < SZ);
    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;
        if(s == "S"){
            int u, v;
            cin >> u >> v;
            b[u] |= b[v];
            b[v] |= b[u];
        }
        else if(s == "Q"){
            int a, d;
            cin >> a >> d;
            if(b[a][d]) cout << "yes\n";
            else cout << "no\n";
        }
        else{
            int d;
            cin >> d;
            int ans = 0;
            for(int i = 1; i <= n; i++){
                if(b[i][d]) ans++;
            }
            cout << ans << "\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