oj.uz

답안 #627732

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
627732 2022-08-12T20:39:51 Z 600Mihnea 메기 농장 (IOI22_fish) C++17
37 / 100
 1000 ms 68468 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 1102 ms 46448 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 1102 ms 61676 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 34724 KB Output is correct
2 Correct 56 ms 34656 KB Output is correct
3 Correct 105 ms 37004 KB Output is correct
4 Correct 99 ms 38596 KB Output is correct
5 Correct 170 ms 44836 KB Output is correct
6 Correct 158 ms 44924 KB Output is correct
7 Correct 161 ms 44832 KB Output is correct
8 Correct 184 ms 44928 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 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 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 468 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 0 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 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 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 468 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 0 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 27 ms 596 KB Output is correct
17 Execution timed out 1097 ms 6732 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 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 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 468 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 0 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 27 ms 596 KB Output is correct
17 Execution timed out 1097 ms 6732 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 34724 KB Output is correct
2 Correct 56 ms 34656 KB Output is correct
3 Correct 105 ms 37004 KB Output is correct
4 Correct 99 ms 38596 KB Output is correct
5 Correct 170 ms 44836 KB Output is correct
6 Correct 158 ms 44924 KB Output is correct
7 Correct 161 ms 44832 KB Output is correct
8 Correct 184 ms 44928 KB Output is correct
9 Correct 227 ms 49604 KB Output is correct
10 Correct 155 ms 26928 KB Output is correct
11 Correct 323 ms 53548 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 0 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 34640 KB Output is correct
19 Correct 60 ms 34628 KB Output is correct
20 Correct 60 ms 34732 KB Output is correct
21 Correct 64 ms 34740 KB Output is correct
22 Correct 263 ms 50784 KB Output is correct
23 Correct 489 ms 65296 KB Output is correct
24 Correct 470 ms 68468 KB Output is correct

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1102 ms 46448 KB Time limit exceeded
2 Halted 0 ms 0 KB -