oj.uz

Submission #388056

# Submission time Handle Problem Language Result Execution time Memory
388056 2021-04-09T20:00:52 Z timmyfeng Sweeping (JOI20_sweeping) C++17
64 / 100
 7315 ms 520148 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 1000001;

#include <bits/extc++.h>

template <class T, class Comp = less<T>>
using ordered_set = __gnu_pbds::tree<
    T, __gnu_pbds::null_type, Comp,
    __gnu_pbds::rb_tree_tag,
    __gnu_pbds::tree_order_statistics_node_update
>;

ordered_set<array<int, 2>> xs[N], ys[N];
int x[N], y[N], xl[N], yl[N], group[N];

void add(int i, int j) {
    int k = group[i];
    xs[k].erase({x[i], i});
    ys[k].erase({y[i], i});
    xs[j].insert({x[i], i});
    ys[j].insert({y[i], i});
    group[i] = j;
}

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

    int n, m, q;
    cin >> n >> m >> q;

    for (int i = 1; i <= m; ++i) {
        cin >> x[i] >> y[i];
        xs[0].insert({x[i], i});
        ys[0].insert({y[i], i});
    }

    map<int, int> triangles = {{0, 0}};

    for (int i = 1; i <= q; ++i) {
        int type;
        cin >> type;

        if (type == 1) {
            int p;
            cin >> p;

            int j = group[p];
            cout << max(xl[j], x[p]) << " " << max(yl[j], y[p]) << "\n";
        } else if (type == 2) {
            int l;
            cin >> l;

            if (triangles.count(n - l) == 0) {
                int j = (--triangles.upper_bound(n - l))->second;
                xl[i] = n - l, yl[i] = yl[j], yl[j] = l + 1;
                triangles[n - l] = i;

                if (ys[j].order_of_key({l + 1, 0}) <= ys[j].size() / 2) {
                    while (!ys[j].empty() && ys[j].begin()->at(0) <= l) {
                        add(ys[j].begin()->at(1), i);
                    }
                } else {
                    while (!ys[j].empty() && (--ys[j].end())->at(0) > l) {
                        add((--ys[j].end())->at(1), i);
                    }
                    swap(xl[j], xl[i]), swap(yl[j], yl[i]);
                    swap(triangles[xl[j]], triangles[xl[i]]);
                }
            }
        } else if (type == 3) {
            int l;
            cin >> l;

            if (triangles.count(l + 1) == 0) {
                int j = (--triangles.upper_bound(l + 1))->second;
                yl[i] = yl[j], xl[i] = l + 1, yl[j] = n - l;
                triangles[l + 1] = i;

                if (xs[j].order_of_key({l + 1, 0}) <= xs[j].size() / 2) {
                    while (!xs[j].empty() && xs[j].begin()->at(0) <= l) {
                        add(xs[j].begin()->at(1), i);
                    }
                    swap(xl[j], xl[i]), swap(yl[j], yl[i]);
                    swap(triangles[xl[j]], triangles[xl[i]]);
                } else {
                    while (!xs[j].empty() && (--xs[j].end())->at(0) > l) {
                        add((--xs[j].end())->at(1), i);
                    }
                }
            }
        } else if (type == 4) {
            int a, b;
            cin >> a >> b;
            assert(false);
        }
    }
}

Subtask #1
0 / 1.0

# Verdict Execution time Memory Grader output
1 Runtime error 307 ms 381900 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 2913 ms 520148 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5502 ms 297736 KB Output is correct
2 Correct 4412 ms 297700 KB Output is correct
3 Correct 2732 ms 297412 KB Output is correct
4 Correct 2647 ms 316528 KB Output is correct
5 Correct 4646 ms 317140 KB Output is correct
6 Correct 4766 ms 317628 KB Output is correct

Subtask #4
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 5502 ms 297736 KB Output is correct
2 Correct 4412 ms 297700 KB Output is correct
3 Correct 2732 ms 297412 KB Output is correct
4 Correct 2647 ms 316528 KB Output is correct
5 Correct 4646 ms 317140 KB Output is correct
6 Correct 4766 ms 317628 KB Output is correct
7 Correct 7315 ms 317732 KB Output is correct
8 Correct 6979 ms 317620 KB Output is correct
9 Correct 6643 ms 317636 KB Output is correct
10 Correct 3550 ms 316528 KB Output is correct
11 Correct 3153 ms 317388 KB Output is correct
12 Correct 5277 ms 317572 KB Output is correct
13 Correct 4843 ms 317516 KB Output is correct
14 Correct 288 ms 192048 KB Output is correct
15 Correct 2100 ms 280332 KB Output is correct
16 Correct 7130 ms 317672 KB Output is correct
17 Correct 6414 ms 313872 KB Output is correct

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Runtime error 307 ms 381900 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -