oj.uz

Submission #894078

# Submission time Handle Problem Language Result Execution time Memory
894078 2023-12-28T00:32:49 Z MilosMilutinovic Monster Game (JOI21_monster) C++17
98 / 100
 62 ms 2360 KB 
#include "monster.h"
#include <bits/stdc++.h>

using namespace std;

namespace {

bool example_variable;

}  // namespace

vector<int> Solve(int n) {
  map<pair<int, int>, bool> mp;
  function<bool(int, int)> Ask = [&](int x, int y) {
    if (x > y) {
      return !Ask(y, x);
    }
    if (!mp.count({x, y})) {
      mp[{x, y}] = Query(x, y);
    }
    return mp[{x, y}];
  };
  vector<int> order(n);
  iota(order.begin(), order.end(), 0);
  vector<int> tmp(n);
  function<void(int, int)> MergeSort = [&](int l, int r) {
    if (l == r) {
      return;
    }
    int mid = l + r >> 1;
    MergeSort(l, mid);
    MergeSort(mid + 1, r);
    for (int i = l; i <= r; i++) {
      tmp[i] = order[i];
    }
    int pl = l, pr = mid + 1;
    int ptr = l;
    while (pl <= mid || pr <= r) {
      if (pl > mid) {
        order[ptr++] = tmp[pr++];
      } else if (pr > r) {
        order[ptr++] = tmp[pl++];
      } else {
        order[ptr++] = (Ask(tmp[pl], tmp[pr]) ? tmp[pl++] : tmp[pr++]);
      }
    }
  };
  MergeSort(0, n - 1);
  int pos = -1;
  auto Check = [&]() {
    if (Ask(order[0], order[2])) {
      return false;
    }
    if (!Ask(order[0], order[1])) {
      return false;
    }
    if (!Ask(order[1], order[2])) {
      return false;
    }
    return true;
  };
  if (n <= 10) {
    vector<int> bad;
    for (int i = 1; i < n; i++) {
      if (!Ask(order[0], order[i])) {
        bad.push_back(i);
      }
    }
    if ((int) bad.size() > 1) {
      pos = bad.rbegin()[1];
    } else {
      bool ok = true;
      for (int i = 2; i < n; i++) {
        if (!Ask(order[1], order[i])) {
          ok = false;
          break;
        }
      }
      if (ok) {
        pos = 1;
      } else {
        pos = 0;
      }
    }
  } else {
    if (Check()) {
      if (!Ask(order[0], order[3]) && !Ask(order[1], order[3])) {
        vector<int> bad;
        for (int i = 1; i < n; i++) {
          if (!Ask(order[0], order[i])) {
            bad.push_back(i);
          }
        }
        pos = bad.rbegin()[1];
      } else {
        int smx = -1;
        vector<int> cnt(3);
        auto Update = [&](int x) {
          for (int i = 0; i < 3; i++) {
            cnt[i] += !Ask(order[i], x);
          }
        };
        if (!Ask(order[3], order[5]) && Ask(order[3], order[4]) && Ask(order[4], order[5])) {
          if (!Ask(order[3], order[6]) && !Ask(order[4], order[6])) {
            vector<int> bad(order[6]);
            for (int i = 7; i < n; i++) {
              if (!Ask(order[3], order[i])) {
                bad.push_back(order[i]);
              }
            }
            if ((int) bad.size() > 1) {
              bad.pop_back();
            }
            Update(bad.back());
          } else {
            for (int i = 3; i < 6; i++) {
              Update(order[i]);
            }
          }
        } else {
          /* bool ok = true;
          for (int i = 5; i < n; i++) {
            if (!Ask(order[4], order[i])) {
              ok = false;
              break;
            }
          }
          if (ok) {
            Update(order[4]);
          } else {
            Update(order[3]);
          } */
          Update(order[4]);
          Update(order[3]);
        }
        for (int i = 0; i < 3; i++) {
          if (cnt[i] > 0) {
            pos = (i - 1 + 3) % 3;
          }
        }
      }
    } else {
      bool ok = true;
      for (int i = 2; i < n; i++) {
        if (!Ask(order[1], order[i])) {
          ok = false;
          break;
        }
      }
      if (ok) {
        pos = 1;
      } else {
        pos = 0;
      }
    }
  }
  vector<int> res;
  function<void(int, int)> Solve = [&](int l, int r) {
    for (int i = r; i >= l; i--) {
      res.push_back(order[i]);
    }
    if (r == n - 1) {
      return;
    }
    for (int i = r + 1; i < n; i++) {
      if (!Ask(order[l], order[i])) {
        Solve(r + 1, i);
        break;
      }
    }
  };
  Solve(0, pos);
  reverse(res.begin(), res.end());
  vector<int> ret(n);
  for (int i = 0; i < n; i++) {
    ret[res[i]] = i;
  }
  return ret;
}

Compilation message

monster.cpp: In lambda function:
monster.cpp:30:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   30 |     int mid = l + r >> 1;
      |               ~~^~~
monster.cpp: In function 'std::vector<int> Solve(int)':
monster.cpp:96:13: warning: unused variable 'smx' [-Wunused-variable]
   96 |         int smx = -1;
      |             ^~~
monster.cpp: At global scope:
monster.cpp:8:6: warning: '{anonymous}::example_variable' defined but not used [-Wunused-variable]
    8 | bool example_variable;
      |      ^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 6 ms 600 KB Output is correct
17 Correct 6 ms 600 KB Output is correct
18 Correct 8 ms 1112 KB Output is correct
19 Correct 5 ms 600 KB Output is correct
20 Correct 7 ms 1112 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 3 ms 600 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 344 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 7 ms 1112 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 6 ms 600 KB Output is correct
17 Correct 6 ms 600 KB Output is correct
18 Correct 8 ms 1112 KB Output is correct
19 Correct 5 ms 600 KB Output is correct
20 Correct 7 ms 1112 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 3 ms 600 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 344 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 7 ms 1112 KB Output is correct
33 Correct 39 ms 2068 KB Output is correct
34 Correct 46 ms 1748 KB Output is correct
35 Correct 46 ms 1260 KB Output is correct
36 Correct 52 ms 1512 KB Output is correct
37 Correct 49 ms 1908 KB Output is correct
38 Correct 43 ms 1836 KB Output is correct
39 Correct 44 ms 1580 KB Output is correct
40 Correct 42 ms 2360 KB Output is correct
41 Correct 51 ms 1676 KB Output is correct
42 Correct 51 ms 1936 KB Output is correct
43 Correct 26 ms 856 KB Output is correct
44 Correct 34 ms 1648 KB Output is correct

Subtask #3
73.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 1768 KB Output is correct
2 Correct 42 ms 1124 KB Output is correct
3 Partially correct 62 ms 2164 KB Partially correct
4 Correct 54 ms 1504 KB Output is correct
5 Correct 52 ms 1572 KB Output is correct
6 Correct 45 ms 1840 KB Output is correct
7 Correct 36 ms 2024 KB Output is correct
8 Correct 53 ms 1968 KB Output is correct
9 Partially correct 51 ms 1500 KB Partially correct
10 Correct 47 ms 1596 KB Output is correct
11 Correct 49 ms 1600 KB Output is correct
12 Partially correct 53 ms 1984 KB Partially correct
13 Correct 48 ms 2196 KB Output is correct
14 Correct 41 ms 1268 KB Output is correct
15 Correct 30 ms 972 KB Output is correct
16 Correct 26 ms 1984 KB Output is correct
17 Correct 22 ms 1484 KB Output is correct
18 Correct 44 ms 1400 KB Output is correct