Submission #489156

#	Time	Username	Problem	Language	Result	Execution time	Memory
489156		PiejanVDC	Inside information (BOI21_servers)	C++17	2.50 / 100	3569 ms	524292 KiB

servers

#include <bits/stdc++.h>
using namespace std;

signed main() {
    int n,k; cin>>n>>k;
    vector<set<int>>v(n);
    for(int i = 0 ; i < n ; i++)
        v[i].insert(i);
    for(int i = 0 ; i < n+k-1 ; i++) {
        char c; cin>>c;
        if(c == 'S') {
            int a,b; cin>>a>>b;
            a--,b--;
            if(v[a].size() < v[b].size()) swap(v[a],v[b]);
            for(auto it = v[b].begin() ; it != v[b].end() ; it++) {
                v[a].insert(*it);
            }
            v[b] = v[a];
        } else if(c == 'Q') {
            int a,d; cin>>a>>d;
            a--,d--;
            if(v[a].count(d)) {
                cout << "yes\n";
            } else cout << "no\n";
        } else {
            int d; cin>>d;
            d--;
            int cnt=0;
            for(auto z : v)
                if(z.count(d)) cnt++;
            cout << cnt << "\n";
        }
    }
}

• 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