oj.uz

Submission #661160

# Submission time Handle Problem Language Result Execution time Memory
661160 2022-11-24T19:16:27 Z mychecksedad Catfish Farm (IOI22_fish) C++17
100 / 100
 306 ms 57308 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
#define pb push_back
const int N = 1e5 + 100;


long long max_weights(int n, int m, vector<int> x, vector<int> y, vector<int> w){  
    vector<ll> fishes[N];
    vector<vector<int>> states(n + 1, {0});
    for(int i = 0; i < m; ++i){
        ++y[i];
        for(int k = max(0, x[i] - 1); k <= min(n - 1, x[i] + 1); ++k){
            states[k].pb(y[i]);
        }
    }
    for(int i = 0; i <= n; ++i){
        sort(states[i].begin(), states[i].end());
        states[i].erase(unique(states[i].begin(), states[i].end()), states[i].end());
        fishes[i].resize(states[i].size());
    }
    for(int i = 0; i < m; ++i){
        int j = x[i];
        int Y = lower_bound(states[j].begin(), states[j].end(), y[i]) - states[j].begin();
        fishes[j][Y] += w[i];
    }
    vector<vector<ll>> dp_up(n + 1), dp_down(n + 1);

    for(int i = 0; i <= n; ++i){
        int sz = states[i].size();
        dp_up[i].resize(sz, 0);
        dp_down[i].resize(sz, 0);
        if(i > 0){
            ll best = dp_down[i - 1][0], sum = 0;
            for(int j = 0, left = 0; j < sz; ++j){
                while(left + 1 < states[i - 1].size() && states[i - 1][left + 1] <= states[i][j]){
                    ++left;
                    best += fishes[i - 1][left];
                    best = max(best, dp_down[i - 1][left]);
                }
                dp_down[i][j] = max(dp_down[i][j], best);
            }
            best = 0;
            sum = accumulate(fishes[i].begin(), fishes[i].end(), 0ll);
            for(int j = sz - 1, left = states[i - 1].size(); j >= 0; --j){
                while(left > 0 && states[i - 1][left - 1] >= states[i][j]){
                    --left;
                    best = max(best, max(dp_up[i - 1][left], dp_down[i - 1][left]) + sum);
                }
                dp_up[i][j] = max(dp_up[i][j], best - sum);
                sum -= fishes[i][j];
            }
        }
        if(i > 1){
            ll best = max(dp_down[i - 2][0], dp_up[i - 2][0]), sum = 0;
            for(int j = 0, left = 0, leftt = 0; j < sz; ++j){
                while(leftt + 1 < states[i - 2].size() && states[i - 2][leftt + 1] <= states[i][j]){
                    ++leftt;
                    while(left + 1 < states[i - 1].size() && states[i - 1][left + 1] <= states[i][j]){
                        ++left;
                        sum += fishes[i - 1][left];
                        best += fishes[i - 1][left];
                    }
                    best = max(best, max(dp_down[i - 2][leftt], dp_up[i - 2][leftt]) + sum);
                }
                dp_down[i][j] = max(dp_down[i][j], best);
                
            }
            
            best = 0;
            sum = accumulate(fishes[i - 1].begin(), fishes[i - 1].end(), 0ll);

            for(int j = sz - 1, left = states[i - 1].size(), leftt = states[i - 2].size(); j >= 0; --j){
                while(leftt - 1 > 0 && states[i - 2][leftt - 1] >= states[i][j]){
                    --leftt;
                    while(left - 1 > 0 && states[i - 1][left - 1] >= states[i - 2][leftt]){
                        --left;
                        sum -= fishes[i - 1][left];
                    }
                    best = max(best, max(dp_down[i - 2][leftt], dp_up[i - 2][leftt]) + sum);
                }
                
                dp_down[i][j] = max(dp_down[i][j], best);
            }
        }
    }


    return max(dp_up[n][0], dp_down[n][0]);
}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:36:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |                 while(left + 1 < states[i - 1].size() && states[i - 1][left + 1] <= states[i][j]){
      |                       ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
fish.cpp:57:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |                 while(leftt + 1 < states[i - 2].size() && states[i - 2][leftt + 1] <= states[i][j]){
      |                       ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
fish.cpp:59:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |                     while(left + 1 < states[i - 1].size() && states[i - 1][left + 1] <= states[i][j]){
      |                           ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 26480 KB Output is correct
2 Correct 85 ms 30008 KB Output is correct
3 Correct 33 ms 22176 KB Output is correct
4 Correct 30 ms 22180 KB Output is correct
5 Correct 229 ms 54076 KB Output is correct
6 Correct 289 ms 50888 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 130 ms 31660 KB Output is correct
3 Correct 152 ms 35948 KB Output is correct
4 Correct 71 ms 26480 KB Output is correct
5 Correct 85 ms 30004 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2640 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 30 ms 22168 KB Output is correct
11 Correct 29 ms 22184 KB Output is correct
12 Correct 78 ms 28760 KB Output is correct
13 Correct 100 ms 32812 KB Output is correct
14 Correct 77 ms 27716 KB Output is correct
15 Correct 83 ms 28604 KB Output is correct
16 Correct 77 ms 27724 KB Output is correct
17 Correct 85 ms 30476 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 22168 KB Output is correct
2 Correct 30 ms 22100 KB Output is correct
3 Correct 56 ms 21428 KB Output is correct
4 Correct 50 ms 23220 KB Output is correct
5 Correct 86 ms 24792 KB Output is correct
6 Correct 87 ms 24844 KB Output is correct
7 Correct 87 ms 24792 KB Output is correct
8 Correct 85 ms 24748 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 3 ms 2796 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2772 KB Output is correct
13 Correct 2 ms 2660 KB Output is correct
14 Correct 2 ms 2772 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 3 ms 2796 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2772 KB Output is correct
13 Correct 2 ms 2660 KB Output is correct
14 Correct 2 ms 2772 KB Output is correct
15 Correct 2 ms 2716 KB Output is correct
16 Correct 3 ms 2744 KB Output is correct
17 Correct 24 ms 6708 KB Output is correct
18 Correct 24 ms 6392 KB Output is correct
19 Correct 23 ms 6316 KB Output is correct
20 Correct 26 ms 6220 KB Output is correct
21 Correct 27 ms 6196 KB Output is correct
22 Correct 52 ms 9652 KB Output is correct
23 Correct 7 ms 3768 KB Output is correct
24 Correct 18 ms 5972 KB Output is correct
25 Correct 2 ms 2744 KB Output is correct
26 Correct 6 ms 3668 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 3 ms 2796 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2772 KB Output is correct
13 Correct 2 ms 2660 KB Output is correct
14 Correct 2 ms 2772 KB Output is correct
15 Correct 2 ms 2716 KB Output is correct
16 Correct 3 ms 2744 KB Output is correct
17 Correct 24 ms 6708 KB Output is correct
18 Correct 24 ms 6392 KB Output is correct
19 Correct 23 ms 6316 KB Output is correct
20 Correct 26 ms 6220 KB Output is correct
21 Correct 27 ms 6196 KB Output is correct
22 Correct 52 ms 9652 KB Output is correct
23 Correct 7 ms 3768 KB Output is correct
24 Correct 18 ms 5972 KB Output is correct
25 Correct 2 ms 2744 KB Output is correct
26 Correct 6 ms 3668 KB Output is correct
27 Correct 4 ms 3412 KB Output is correct
28 Correct 116 ms 20980 KB Output is correct
29 Correct 182 ms 31568 KB Output is correct
30 Correct 207 ms 42208 KB Output is correct
31 Correct 205 ms 41932 KB Output is correct
32 Correct 172 ms 26576 KB Output is correct
33 Correct 211 ms 42700 KB Output is correct
34 Correct 210 ms 42704 KB Output is correct
35 Correct 73 ms 15732 KB Output is correct
36 Correct 194 ms 37860 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 22168 KB Output is correct
2 Correct 30 ms 22100 KB Output is correct
3 Correct 56 ms 21428 KB Output is correct
4 Correct 50 ms 23220 KB Output is correct
5 Correct 86 ms 24792 KB Output is correct
6 Correct 87 ms 24844 KB Output is correct
7 Correct 87 ms 24792 KB Output is correct
8 Correct 85 ms 24748 KB Output is correct
9 Correct 99 ms 29388 KB Output is correct
10 Correct 68 ms 15868 KB Output is correct
11 Correct 169 ms 29052 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2608 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2600 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 30 ms 22164 KB Output is correct
19 Correct 30 ms 22100 KB Output is correct
20 Correct 29 ms 22156 KB Output is correct
21 Correct 33 ms 22196 KB Output is correct
22 Correct 129 ms 29012 KB Output is correct
23 Correct 169 ms 34516 KB Output is correct
24 Correct 179 ms 39148 KB Output is correct

Subtask #8
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 26480 KB Output is correct
2 Correct 85 ms 30008 KB Output is correct
3 Correct 33 ms 22176 KB Output is correct
4 Correct 30 ms 22180 KB Output is correct
5 Correct 229 ms 54076 KB Output is correct
6 Correct 289 ms 50888 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 130 ms 31660 KB Output is correct
9 Correct 152 ms 35948 KB Output is correct
10 Correct 71 ms 26480 KB Output is correct
11 Correct 85 ms 30004 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2640 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 30 ms 22168 KB Output is correct
17 Correct 29 ms 22184 KB Output is correct
18 Correct 78 ms 28760 KB Output is correct
19 Correct 100 ms 32812 KB Output is correct
20 Correct 77 ms 27716 KB Output is correct
21 Correct 83 ms 28604 KB Output is correct
22 Correct 77 ms 27724 KB Output is correct
23 Correct 85 ms 30476 KB Output is correct
24 Correct 30 ms 22168 KB Output is correct
25 Correct 30 ms 22100 KB Output is correct
26 Correct 56 ms 21428 KB Output is correct
27 Correct 50 ms 23220 KB Output is correct
28 Correct 86 ms 24792 KB Output is correct
29 Correct 87 ms 24844 KB Output is correct
30 Correct 87 ms 24792 KB Output is correct
31 Correct 85 ms 24748 KB Output is correct
32 Correct 1 ms 2644 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2644 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 1 ms 2644 KB Output is correct
39 Correct 2 ms 2644 KB Output is correct
40 Correct 2 ms 2644 KB Output is correct
41 Correct 3 ms 2796 KB Output is correct
42 Correct 2 ms 2644 KB Output is correct
43 Correct 2 ms 2772 KB Output is correct
44 Correct 2 ms 2660 KB Output is correct
45 Correct 2 ms 2772 KB Output is correct
46 Correct 2 ms 2716 KB Output is correct
47 Correct 3 ms 2744 KB Output is correct
48 Correct 24 ms 6708 KB Output is correct
49 Correct 24 ms 6392 KB Output is correct
50 Correct 23 ms 6316 KB Output is correct
51 Correct 26 ms 6220 KB Output is correct
52 Correct 27 ms 6196 KB Output is correct
53 Correct 52 ms 9652 KB Output is correct
54 Correct 7 ms 3768 KB Output is correct
55 Correct 18 ms 5972 KB Output is correct
56 Correct 2 ms 2744 KB Output is correct
57 Correct 6 ms 3668 KB Output is correct
58 Correct 4 ms 3412 KB Output is correct
59 Correct 116 ms 20980 KB Output is correct
60 Correct 182 ms 31568 KB Output is correct
61 Correct 207 ms 42208 KB Output is correct
62 Correct 205 ms 41932 KB Output is correct
63 Correct 172 ms 26576 KB Output is correct
64 Correct 211 ms 42700 KB Output is correct
65 Correct 210 ms 42704 KB Output is correct
66 Correct 73 ms 15732 KB Output is correct
67 Correct 194 ms 37860 KB Output is correct
68 Correct 99 ms 29388 KB Output is correct
69 Correct 68 ms 15868 KB Output is correct
70 Correct 169 ms 29052 KB Output is correct
71 Correct 2 ms 2644 KB Output is correct
72 Correct 2 ms 2608 KB Output is correct
73 Correct 2 ms 2644 KB Output is correct
74 Correct 2 ms 2644 KB Output is correct
75 Correct 2 ms 2600 KB Output is correct
76 Correct 2 ms 2644 KB Output is correct
77 Correct 30 ms 22164 KB Output is correct
78 Correct 30 ms 22100 KB Output is correct
79 Correct 29 ms 22156 KB Output is correct
80 Correct 33 ms 22196 KB Output is correct
81 Correct 129 ms 29012 KB Output is correct
82 Correct 169 ms 34516 KB Output is correct
83 Correct 179 ms 39148 KB Output is correct
84 Correct 262 ms 55500 KB Output is correct
85 Correct 250 ms 56960 KB Output is correct
86 Correct 290 ms 55744 KB Output is correct
87 Correct 303 ms 57292 KB Output is correct
88 Correct 2 ms 2644 KB Output is correct
89 Correct 306 ms 57308 KB Output is correct
90 Correct 239 ms 53068 KB Output is correct
91 Correct 195 ms 47420 KB Output is correct