Submission #657576

#	Time	Username	Problem	Language	Result	Execution time	Memory
657576		TimDee	Inside information (BOI21_servers)	C++17	5 / 100	453 ms	524288 KiB

servers

#include <bits/stdc++.h>
using namespace std;
#define forn(i,n) for (int i=0; i<n; ++i)

void solve() {

	int n,q; cin>>n>>q;
	vector<bitset<120000>> a(n);
	forn(i,n) a[i].set(i);

	forn(Q,n-1+q) {
		char c;
		cin>>c;
		if (c=='S') {

			int u,v; cin>>u>>v; --u,--v;
			forn(i,n) {
				if (a[i][u]) a[i].set(v);
				else if (a[i][v]) a[i].set(u);
			}

		} else if (c=='Q') {

			int u,x; cin>>u>>x; --u, --x;
			cout << (a[x][u]?"yes\n":"no\n");

		} else {
			int x; cin>>x; --x;
			cout<<a[x].count()<<'\n';
		}
	}

}

int32_t main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	solve();
	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