oj.uz

답안 #627731

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
627731 2022-08-12T20:39:35 Z 600Mihnea 메기 농장 (IOI22_fish) C++17
37 / 100
 1000 ms 68416 KB 
#include "fish.h"

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

void maxup(ll &a, ll b) {
  a = max(a, b);
}

long long max_weights(int n, int cnt_fish, std::vector<int> XX, std::vector<int> YY, std::vector<int> WW) {
  n += 7;

  vector<set<int>> interestingSet(n);
  vector<vector<int>> interesting(n);
  vector<vector<vector<ll>>> dp(2, vector<vector<ll>> (n));
  vector<vector<ll>> both(n);
  vector<ll> dp_zero(n, 0LL);
  vector<vector<pair<int, ll>>> pe(n);

  assert((int) XX.size() == cnt_fish);
  assert((int) YY.size() == cnt_fish);
  assert((int) WW.size() == cnt_fish);


  for (int i = 0; i < cnt_fish; i++) {
    int x = XX[i] + 5, y = YY[i] + 1, w = WW[i];
    pe[x].push_back({y, w});
    vector<int> xs = {x - 1, x + 1};
    for (auto &i : xs) {
      interestingSet[i].insert(y);
    }
  }

  for (int x = 0; x < n; x++) {
    interestingSet[x].insert(0);
    for (auto &y : interestingSet[x]) {
      interesting[x].push_back(y);
    }
    dp[0][x].resize((int) interesting[x].size(), 0LL);
    dp[1][x].resize((int) interesting[x].size(), 0LL);
    both[x].resize((int) interesting[x].size(), 0LL);

    sort(pe[x].begin(), pe[x].end());
    ll sum = 0;
    for (auto &it : pe[x]) {
      sum += it.second;
      it.second = sum;
    }
  }

  function<ll(int, int)> get = [&] (int x, int y) {
    if (x == n) {
      return 0LL;
    }
    assert(0 <= x && x < n);
    assert(0 <= y && y < n);
    ll sol = 0;
    int low = 0, high = (int) pe[x].size() - 1;

    while (low <= high) {
      int mid = (low + high) / 2;
      if (pe[x][mid].first <= y) {
        sol = pe[x][mid].second;
        low = mid + 1;
      } else {
        high = mid - 1;
      }
    }

    return sol;
  };

  for (int i = 5; i < n - 2; i++) {
    {
      maxup(dp_zero[i], dp_zero[i - 1]);
      for (int ant_j = 0; ant_j < (int) interesting[i - 1].size(); ant_j++) {
        int h2 = interesting[i - 1][ant_j];
        maxup(dp_zero[i], dp[0][i - 1][ant_j]);
        maxup(dp_zero[i], dp[1][i - 1][ant_j]);
      }
    }
    {
      for (int j = 0; j < (int) interesting[i].size(); j++) {
        int h = interesting[i][j];
        ll dp_ant0 = 0;
        maxup(dp_ant0, dp_zero[i - 2] + get(i - 1, h) + get(i + 1, h));
        for (int ant_j = 0; ant_j < (int) interesting[i - 2].size(); ant_j++) {
          int h2 = interesting[i - 2][ant_j];
          if (h2 <= h) {
            maxup(dp_ant0, both[i - 2][ant_j] + (get(i - 1, h) - get(i - 1, h2)) + get(i + 1, h));
          } else {
            maxup(dp_ant0, both[i - 2][ant_j] + get(i + 1, h));
          }
        }
        maxup(dp[0][i][j], dp_ant0);
        maxup(dp[1][i][j], dp_ant0);
        for (int ant_j = 0; ant_j < (int) interesting[i - 1].size(); ant_j++) {
          int h2 = interesting[i - 1][ant_j];
          if (h2 >= h) {
            maxup(dp[0][i][j], both[i - 1][ant_j] - get(i, h) + get(i + 1, h));
          }
          if (h2 <= h) {
            maxup(dp[1][i][j], dp[1][i - 1][ant_j] - get(i, h2) + (get(i - 1, h) - get(i - 1, h2)) + get(i + 1, h));
          }
        }
        both[i][j] = max(dp[0][i][j], dp[1][i][j]);
      }
    }
  }
  ll sol = 0;

  for (int i = 0; i < n; i++) {
    maxup(sol, dp_zero[i]);
    for (int j = 0; j < (int) interesting[i].size(); j++) {
      maxup(sol, both[i][j]);
    }
  }

  return sol;
}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:80:13: warning: unused variable 'h2' [-Wunused-variable]
   80 |         int h2 = interesting[i - 1][ant_j];
      |             ^~

Subtask #1
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1089 ms 46468 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Execution timed out 1082 ms 61796 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 34728 KB Output is correct
2 Correct 58 ms 34740 KB Output is correct
3 Correct 103 ms 36868 KB Output is correct
4 Correct 112 ms 38616 KB Output is correct
5 Correct 166 ms 44920 KB Output is correct
6 Correct 158 ms 44820 KB Output is correct
7 Correct 180 ms 44884 KB Output is correct
8 Correct 160 ms 44868 KB Output is correct

Subtask #4
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 3 ms 596 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 468 KB Output is correct

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 3 ms 596 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 29 ms 644 KB Output is correct
17 Execution timed out 1095 ms 6724 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 3 ms 596 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 29 ms 644 KB Output is correct
17 Execution timed out 1095 ms 6724 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #7
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 34728 KB Output is correct
2 Correct 58 ms 34740 KB Output is correct
3 Correct 103 ms 36868 KB Output is correct
4 Correct 112 ms 38616 KB Output is correct
5 Correct 166 ms 44920 KB Output is correct
6 Correct 158 ms 44820 KB Output is correct
7 Correct 180 ms 44884 KB Output is correct
8 Correct 160 ms 44868 KB Output is correct
9 Correct 221 ms 49620 KB Output is correct
10 Correct 194 ms 26948 KB Output is correct
11 Correct 306 ms 53432 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 61 ms 34720 KB Output is correct
19 Correct 64 ms 34656 KB Output is correct
20 Correct 55 ms 34724 KB Output is correct
21 Correct 60 ms 34620 KB Output is correct
22 Correct 284 ms 50784 KB Output is correct
23 Correct 450 ms 65380 KB Output is correct
24 Correct 493 ms 68416 KB Output is correct

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1089 ms 46468 KB Time limit exceeded
2 Halted 0 ms 0 KB -