Submission #679825

# Submission time Handle Problem Language Result Execution time Memory
679825 2023-01-09T11:36:41 Z bashkort Monster Game (JOI21_monster) C++17
70 / 100
171 ms 336 KB
#include "monster.h"
#include <bits/stdc++.h>

using namespace std;

mt19937 rnd(228);

vector<int> Solve(int n) {
    vector<int> ord(n);
    iota(ord.begin(), ord.end(), 0);

    shuffle(ord.begin(), ord.end(), rnd);

        auto merge_sort = [&](auto self, vector<int> a) -> vector<int> {
        if (a.size() == 1) {
            return a;
        }
        int mid = a.size() / 2;
        auto L = self(self, vector(a.begin(), a.begin() + mid));
        auto R = self(self, vector(a.begin() + mid, a.end()));
        a.clear();
        int i = 0, j = 0;
        while (i < L.size() || j < R.size()) {
            if (i < L.size() && (j == R.size() || !Query(L[i], R[j]))) {
                a.push_back(L[i++]);
            } else {
                a.push_back(R[j++]);
            }
        }
        return a;
    };

    ord = merge_sort(merge_sort, ord);

    stable_sort(ord.begin(), ord.end(), [&](int i, int j) {
        return !Query(i, j);
    });

    int k = min(n, 10);

    vector<int> win(k);

    for (int i = 0; i < k; ++i) {
        for (int j = i + 1; j < k; ++j) {
            if (Query(ord[i], ord[j])) {
                win[i] += 1;
            } else {
                win[j] += 1;
            }
        }
    }

    int fi = min_element(win.begin(), win.end()) - win.begin();
    assert(win.begin() + fi != win.end());
    int se = min_element(win.begin() + fi + 1, win.end()) - win.begin();

    int x = Query(ord[fi], ord[se]) ? fi : se;

    rotate(ord.begin(), ord.begin() + x, ord.begin() + x + 1);

    x = 0;

    for (int i = 1, j = 1; i < n; i = j) {
        while (Query(ord[j], ord[x])) {
            j += 1;
        }

        j += 1;
        reverse(ord.begin() + i, ord.begin() + j);

        x = j - 1;
    }

    vector<int> ans(n);
    for (int i = 0; i < n; ++i) {
        ans[ord[i]] = i;
    }

    return ans;
}

Compilation message

monster.cpp: In instantiation of 'Solve(int)::<lambda(auto:23, std::vector<int>)> [with auto:23 = Solve(int)::<lambda(auto:23, std::vector<int>)>]':
monster.cpp:33:37:   required from here
monster.cpp:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         while (i < L.size() || j < R.size()) {
      |                ~~^~~~~~~~~~
monster.cpp:23:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         while (i < L.size() || j < R.size()) {
      |                                ~~^~~~~~~~~~
monster.cpp:24:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |             if (i < L.size() && (j == R.size() || !Query(L[i], R[j]))) {
      |                 ~~^~~~~~~~~~
monster.cpp:24:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |             if (i < L.size() && (j == R.size() || !Query(L[i], R[j]))) {
      |                                  ~~^~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 14 ms 208 KB Output is correct
17 Correct 22 ms 208 KB Output is correct
18 Correct 29 ms 208 KB Output is correct
19 Correct 17 ms 208 KB Output is correct
20 Correct 25 ms 208 KB Output is correct
21 Correct 1 ms 208 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
23 Correct 1 ms 208 KB Output is correct
24 Correct 1 ms 208 KB Output is correct
25 Correct 1 ms 208 KB Output is correct
26 Correct 18 ms 208 KB Output is correct
27 Correct 0 ms 208 KB Output is correct
28 Correct 1 ms 208 KB Output is correct
29 Correct 1 ms 208 KB Output is correct
30 Correct 1 ms 208 KB Output is correct
31 Correct 1 ms 208 KB Output is correct
32 Correct 23 ms 208 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 14 ms 208 KB Output is correct
17 Correct 22 ms 208 KB Output is correct
18 Correct 29 ms 208 KB Output is correct
19 Correct 17 ms 208 KB Output is correct
20 Correct 25 ms 208 KB Output is correct
21 Correct 1 ms 208 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
23 Correct 1 ms 208 KB Output is correct
24 Correct 1 ms 208 KB Output is correct
25 Correct 1 ms 208 KB Output is correct
26 Correct 18 ms 208 KB Output is correct
27 Correct 0 ms 208 KB Output is correct
28 Correct 1 ms 208 KB Output is correct
29 Correct 1 ms 208 KB Output is correct
30 Correct 1 ms 208 KB Output is correct
31 Correct 1 ms 208 KB Output is correct
32 Correct 23 ms 208 KB Output is correct
33 Correct 128 ms 296 KB Output is correct
34 Correct 171 ms 208 KB Output is correct
35 Correct 137 ms 328 KB Output is correct
36 Correct 126 ms 296 KB Output is correct
37 Correct 116 ms 208 KB Output is correct
38 Correct 142 ms 292 KB Output is correct
39 Correct 118 ms 296 KB Output is correct
40 Correct 90 ms 208 KB Output is correct
41 Correct 118 ms 300 KB Output is correct
42 Correct 105 ms 300 KB Output is correct
43 Correct 110 ms 296 KB Output is correct
44 Correct 131 ms 208 KB Output is correct
# Verdict Execution time Memory Grader output
1 Partially correct 118 ms 208 KB Partially correct
2 Partially correct 103 ms 336 KB Partially correct
3 Partially correct 127 ms 308 KB Partially correct
4 Partially correct 141 ms 292 KB Partially correct
5 Partially correct 117 ms 208 KB Partially correct
6 Partially correct 124 ms 296 KB Partially correct
7 Partially correct 99 ms 208 KB Partially correct
8 Partially correct 131 ms 208 KB Partially correct
9 Partially correct 124 ms 208 KB Partially correct
10 Partially correct 122 ms 300 KB Partially correct
11 Partially correct 149 ms 208 KB Partially correct
12 Partially correct 154 ms 296 KB Partially correct
13 Partially correct 111 ms 208 KB Partially correct
14 Partially correct 122 ms 208 KB Partially correct
15 Partially correct 87 ms 292 KB Partially correct
16 Partially correct 108 ms 208 KB Partially correct
17 Partially correct 115 ms 292 KB Partially correct
18 Partially correct 96 ms 300 KB Partially correct