oj.uz

Submission #647920

# Submission time Handle Problem Language Result Execution time Memory
647920 2022-10-04T15:57:20 Z gurkot Catfish Farm (IOI22_fish) C++17
100 / 100
 233 ms 38908 KB 
#include <bits/stdc++.h>
using namespace std;

constexpr int kUp = 0;
constexpr int kDown = 1;

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W) {
  vector<vector<pair<int, int>>> fishes(N);

  for (int i = 0; i < M; ++i) {
    fishes[X[i]].push_back(make_pair(Y[i], i));
  }

  long long largest = 0;
  vector<pair<int, long long>> up, down;
  vector<vector<long long>> dp(M, vector<long long>(2, LLONG_MIN / 2));
  for (int x = 0; x < N; ++x) {
    sort(fishes[x].begin(), fishes[x].end());

    if (x > 0) {
    	
      long long max_down = 0;
      for (int j = (int)fishes[x].size() - 1; j >= 0; --j) {
        int y = fishes[x][j].first;
        int i = fishes[x][j].second;
        while (down.size() > 0 && down.back().first > y) {
          max_down = max(max_down, down.back().second);
          down.pop_back();
        }

        long long &ret = dp[i][kDown];
        ret = largest + W[i];
        ret = max(ret, max_down + W[i]);
        if (j + 1 < static_cast<int>(fishes[x].size())) {
          ret = max(ret, dp[fishes[x][j + 1].second][kDown] + W[i]);
        }
      }
    }


    if (x >= 1)
      for (int ii=0;ii<fishes[x - 1].size();ii++){	    
	    pair<int, int> tmp=fishes[x - 1][ii];	    
        largest = max(largest, dp[tmp.second][kDown]);
      }
    

    long long max_up = 0;
    for (int j = 0; j < (int)fishes[x].size(); ++j) {
      int y = fishes[x][j].first;
      int i = fishes[x][j].second;
      while (up.size() > 0 && up.back().first < y) {
        max_up = max(max_up, up.back().second);
        up.pop_back();
      }

      long long &ret = dp[i][kUp];
      ret = largest + W[i];
      ret = max(ret, max_up + W[i]);
      if (j > 0) {
        ret = max(ret, dp[fishes[x][j - 1].second][kUp] + W[i]);
       
      }
    }


    if (x >= 1)
	for (int ii=0;ii<fishes[x - 1].size();ii++){ 
      pair<int, int> tmp=fishes[x - 1][ii];	    
        largest = max(largest, dp[tmp.second][kUp]);
    }

    down.clear();
    for (int j = 0; j < (int)fishes[x].size(); ++j) {
      down.push_back(make_pair(fishes[x][j].first, dp[fishes[x][j].second][kDown]));
    }
    up.clear();
    for (int j = (int)(fishes[x].size()) - 1; j >= 0; --j) {
      up.push_back(make_pair(fishes[x][j].first, dp[fishes[x][j].second][kUp]));
    }  
  }

  long long answer = 0;
  for (int i = 0; i < M; ++i) {
    answer = max(answer, dp[i][kDown]);
    if (X[i] + 1 < N) {
      answer = max(answer, dp[i][kUp]);
    }
  }
  return answer;
}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:43:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |       for (int ii=0;ii<fishes[x - 1].size();ii++){
      |                     ~~^~~~~~~~~~~~~~~~~~~~~
fish.cpp:69:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |  for (int ii=0;ii<fishes[x - 1].size();ii++){
      |                ~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 15036 KB Output is correct
2 Correct 57 ms 17456 KB Output is correct
3 Correct 2 ms 2604 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 216 ms 38908 KB Output is correct
6 Correct 180 ms 36576 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 111 ms 23204 KB Output is correct
3 Correct 139 ms 27704 KB Output is correct
4 Correct 49 ms 14768 KB Output is correct
5 Correct 58 ms 17316 KB Output is correct
6 Correct 1 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 212 KB Output is correct
10 Correct 3 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 53 ms 14868 KB Output is correct
13 Correct 71 ms 17352 KB Output is correct
14 Correct 49 ms 12608 KB Output is correct
15 Correct 53 ms 13948 KB Output is correct
16 Correct 50 ms 12760 KB Output is correct
17 Correct 60 ms 13888 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2644 KB Output is correct
2 Correct 3 ms 2644 KB Output is correct
3 Correct 33 ms 8964 KB Output is correct
4 Correct 20 ms 6732 KB Output is correct
5 Correct 58 ms 14188 KB Output is correct
6 Correct 62 ms 14324 KB Output is correct
7 Correct 64 ms 14824 KB Output is correct
8 Correct 66 ms 15056 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 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 1 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 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 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 1 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 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 28 ms 4840 KB Output is correct
18 Correct 22 ms 5172 KB Output is correct
19 Correct 20 ms 5076 KB Output is correct
20 Correct 20 ms 5068 KB Output is correct
21 Correct 21 ms 4940 KB Output is correct
22 Correct 44 ms 9980 KB Output is correct
23 Correct 5 ms 1108 KB Output is correct
24 Correct 14 ms 3248 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 5 ms 1052 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 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 1 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 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 28 ms 4840 KB Output is correct
18 Correct 22 ms 5172 KB Output is correct
19 Correct 20 ms 5076 KB Output is correct
20 Correct 20 ms 5068 KB Output is correct
21 Correct 21 ms 4940 KB Output is correct
22 Correct 44 ms 9980 KB Output is correct
23 Correct 5 ms 1108 KB Output is correct
24 Correct 14 ms 3248 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 5 ms 1052 KB Output is correct
27 Correct 2 ms 596 KB Output is correct
28 Correct 112 ms 23776 KB Output is correct
29 Correct 176 ms 32916 KB Output is correct
30 Correct 170 ms 32360 KB Output is correct
31 Correct 169 ms 32340 KB Output is correct
32 Correct 162 ms 33096 KB Output is correct
33 Correct 163 ms 32392 KB Output is correct
34 Correct 153 ms 31696 KB Output is correct
35 Correct 56 ms 12272 KB Output is correct
36 Correct 166 ms 31068 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2644 KB Output is correct
2 Correct 3 ms 2644 KB Output is correct
3 Correct 33 ms 8964 KB Output is correct
4 Correct 20 ms 6732 KB Output is correct
5 Correct 58 ms 14188 KB Output is correct
6 Correct 62 ms 14324 KB Output is correct
7 Correct 64 ms 14824 KB Output is correct
8 Correct 66 ms 15056 KB Output is correct
9 Correct 70 ms 14308 KB Output is correct
10 Correct 56 ms 11928 KB Output is correct
11 Correct 125 ms 24124 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 300 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 3 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2600 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 63 ms 14112 KB Output is correct
23 Correct 119 ms 22436 KB Output is correct
24 Correct 130 ms 24076 KB Output is correct

Subtask #8
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 15036 KB Output is correct
2 Correct 57 ms 17456 KB Output is correct
3 Correct 2 ms 2604 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 216 ms 38908 KB Output is correct
6 Correct 180 ms 36576 KB Output is correct
7 Correct 1 ms 304 KB Output is correct
8 Correct 111 ms 23204 KB Output is correct
9 Correct 139 ms 27704 KB Output is correct
10 Correct 49 ms 14768 KB Output is correct
11 Correct 58 ms 17316 KB Output is correct
12 Correct 1 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 3 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 53 ms 14868 KB Output is correct
19 Correct 71 ms 17352 KB Output is correct
20 Correct 49 ms 12608 KB Output is correct
21 Correct 53 ms 13948 KB Output is correct
22 Correct 50 ms 12760 KB Output is correct
23 Correct 60 ms 13888 KB Output is correct
24 Correct 3 ms 2644 KB Output is correct
25 Correct 3 ms 2644 KB Output is correct
26 Correct 33 ms 8964 KB Output is correct
27 Correct 20 ms 6732 KB Output is correct
28 Correct 58 ms 14188 KB Output is correct
29 Correct 62 ms 14324 KB Output is correct
30 Correct 64 ms 14824 KB Output is correct
31 Correct 66 ms 15056 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 212 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 28 ms 4840 KB Output is correct
49 Correct 22 ms 5172 KB Output is correct
50 Correct 20 ms 5076 KB Output is correct
51 Correct 20 ms 5068 KB Output is correct
52 Correct 21 ms 4940 KB Output is correct
53 Correct 44 ms 9980 KB Output is correct
54 Correct 5 ms 1108 KB Output is correct
55 Correct 14 ms 3248 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 5 ms 1052 KB Output is correct
58 Correct 2 ms 596 KB Output is correct
59 Correct 112 ms 23776 KB Output is correct
60 Correct 176 ms 32916 KB Output is correct
61 Correct 170 ms 32360 KB Output is correct
62 Correct 169 ms 32340 KB Output is correct
63 Correct 162 ms 33096 KB Output is correct
64 Correct 163 ms 32392 KB Output is correct
65 Correct 153 ms 31696 KB Output is correct
66 Correct 56 ms 12272 KB Output is correct
67 Correct 166 ms 31068 KB Output is correct
68 Correct 70 ms 14308 KB Output is correct
69 Correct 56 ms 11928 KB Output is correct
70 Correct 125 ms 24124 KB Output is correct
71 Correct 0 ms 212 KB Output is correct
72 Correct 1 ms 300 KB Output is correct
73 Correct 1 ms 212 KB Output is correct
74 Correct 1 ms 212 KB Output is correct
75 Correct 1 ms 212 KB Output is correct
76 Correct 0 ms 212 KB Output is correct
77 Correct 3 ms 2644 KB Output is correct
78 Correct 2 ms 2644 KB Output is correct
79 Correct 2 ms 2600 KB Output is correct
80 Correct 2 ms 2644 KB Output is correct
81 Correct 63 ms 14112 KB Output is correct
82 Correct 119 ms 22436 KB Output is correct
83 Correct 130 ms 24076 KB Output is correct
84 Correct 194 ms 34344 KB Output is correct
85 Correct 233 ms 33180 KB Output is correct
86 Correct 184 ms 34072 KB Output is correct
87 Correct 229 ms 33540 KB Output is correct
88 Correct 1 ms 212 KB Output is correct
89 Correct 210 ms 34400 KB Output is correct
90 Correct 176 ms 31820 KB Output is correct
91 Correct 182 ms 31680 KB Output is correct