Submission #529007

#	Time	Username	Problem	Language	Result	Execution time	Memory
529007		OttoTheDino	Inside information (BOI21_servers)	C++17	0 / 100	49 ms	1628 KiB

servers

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

#define rep(i,s,e)                  for (int i = s; i <= e; ++i)
#define rrep(i,s,e)                 for (int i = s; i >= e; --i)
#define pb                          push_back
#define pf                          push_front
#define fi                          first
#define se                          second
#define all(a)                      a.begin(), a.end()
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector<string> vs;
typedef vector<ll> vll;

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

    int n, k; cin >> n >> k;
    int rec_r[n+1], rec_l[n+1];

    rep (i,1,n) rec_r[i] = rec_l[i] = i;

    rep (q,1,n+k-1) {
        char tp; cin >> tp;
        if (tp=='S') {
            int a, b; cin >> a >> b;
            if (b<a) swap(a,b);
            rec_r[a] = rec_r[b];
            rec_l[b] = rec_l[a];
        }
        else if (tp=='Q') {
            int a, d; cin >> a >> d;
            if (d<a && rec_l[a]<=d) cout << "yes\n";
            else if (d>a && rec_r[a]>=d) cout << "yes\n";
            else cout << "no\n";
        }
        else {
            int d; cin >> d;
            int lo = d, hi = n, lo2 = 1, hi2 = d;
            while (lo<hi) {
                int mid = (lo+hi+1)/2;
                if (rec_l[mid]<=d) lo = mid;
                else hi = mid-1;
            }
            while (lo2<hi2) {
                int mid = (lo2+hi2)/2;
                if (rec_r[mid]>=d) hi2 = mid;
                else lo2 = mid+1;
            }
            cout << lo-lo2+1 << "\n";
        }
    }

    return 0;
}

• Subtask 1: 0 / 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