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Submission #925284

# Submission time Handle Problem Language Result Execution time Memory
925284 2024-02-11T10:20:11 Z IS_Rushdi Catfish Farm (IOI22_fish) C++17
67 / 100
 1000 ms 32592 KB 
#include "fish.h"
#include <bits/stdc++.h>
using namespace std;
 
 
long long max_weights(int n,int m,vector<int>x,vector<int>y,vector<int>w){
    int mx = *max_element(y.begin(),y.end());
    if(n <= 300){
        long long dp[n+2][n+2][2]{};
    long long sum[n+2][n+2]{};
    for(int i = 0; i < m; i++) x[i] += 1;
    for(int i = 0; i < m; i++) y[i] += 1;
    for(int i = 0; i < m; i++) sum[x[i]][y[i]] += w[i];
    long long ans = 0;
    for(int i = 0; i <= n+1; i++){
        for(int j = n; j >= 0; j--){
            sum[i][j] += sum[i][j+1]; 
        }
    }
    for(int i = 1; i <= n+1; i++){
        for(int j = 0; j < 2; j++){
            dp[0][i][j] = -1e18;
        }
    }
    dp[0][0][1] = 0;
    for(int i = 1; i <= n; i++){
        for(int j = 0; j <= n+1; j++){
            for(int k = 0; k <= n+1; k++){
                long long now = dp[i-1][j][1];
                if(k > j){
                    now += sum[i-1][j]-sum[i-1][k];
                }
                if(j > k){
                    now += sum[i][k]-sum[i][j];
                }

                ans = max(ans,now);
                if(k > j) dp[i][k][1] = max(dp[i][k][1],now);
                else if (k < j){
                    dp[i][k][0] = max(dp[i][k][0],now);
                    now -= dp[i-1][j][1];
                    now += dp[i-1][j][0];
                    ans = max(ans,now);
                    dp[i][k][0] = max(dp[i][k][0],now);
                }
                else{
                    dp[i][k][1] = max(dp[i][k][1],now);
                    dp[i][k][0] = max(dp[i][k][0],now);
                    now -= dp[i-1][j][1];
                    now += dp[i-1][j][0];
                    ans = max(ans,now);
                    dp[i][k][0] = max(dp[i][k][0],now);
                    dp[i][k][1] = max(dp[i][k][1],now);
                }
            }
            dp[i][0][1] = max({dp[i][0][1],dp[i-1][j][1],dp[i-1][j][0]});

        }
    }
    return ans;
    }
    
    mx = *max_element(x.begin(),x.end());
    if(mx <= 1){
        long long ans = 0;
        long long ans2 = 0;
        int cost[n][2]{};
        for(int i = 0; i < m; i++){
            if(x[i] == 1){cost[y[i]][1] = w[i]; ans += w[i];}
            if(x[i] == 0){ans2 += w[i];cost[y[i]][0]=w[i];}
        }
        if(n == 2 || n == 1) return max(ans,ans2);
        ans2 = max(ans,ans2);
        
        for(int i = 1; i < n; i++){
            ans -= cost[i-1][1];
            ans += cost[i-1][0];
    
            ans2 = max(ans2,ans);
        }
        return ans2;
    }else{
        bool z = 1;
        for(int i = 0; i < n; i++){
            z = (z && (x[i] % 2 == 0));
        }
        if(z){
            long long sum = 0;
            for(int i = 0; i < m; i++) sum += w[i];
            return sum;
        }
        else{
            long long dp[n+2][4][4]{};
    
    vector<pair<int,int>>hv[n+2];
    vector<int>to[n+2];
    for(int i = 0; i < m; i++){
        hv[x[i]+2].push_back({y[i]+1,w[i]});
        to[x[i]+2].push_back(y[i]);    
    }
 
    for(int i = 0; i <= n+1; i++){
        to[i].push_back(0);
        if(i > 1){
            to[i].push_back(n+3);
        }
    }
    long long ans = 0;
    for(int i = 2; i <= n+1; i++){
        int sz = 0;
        for(int j = 0; j < to[i-2].size(); j++){
            for(int k = 0; k < to[i-1].size(); k++){
                for(int v = 0; v < to[i].size(); v++){
                    long long now = dp[i-1][k][j];
                    for(auto nodes : hv[i-1]){
                        if(nodes.first > max(to[i-2][j],to[i-1][k])){
                            if(nodes.first <= to[i][v]){
                                now += nodes.second;
                            }
                        }
                    }
                    for(auto nodes : hv[i]){
                        if(nodes.first > to[i][v]){
                            if(nodes.first <= to[i-1][k]){
                                now += nodes.second;
                            }
                        }
                    }
                    
                    dp[i][v][k] = max(dp[i][v][k],now);
                    ans = max(ans,now);
                    }
                }
            }
        }
        return ans;
        }
    }
}
 
// int main(){
//     cout << max_weights(5, 4, {0, 1, 4, 3}, {2, 1, 4, 3}, {5, 2, 1, 3}) << '\n';
// }

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:111:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  111 |         for(int j = 0; j < to[i-2].size(); j++){
      |                        ~~^~~~~~~~~~~~~~~~
fish.cpp:112:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |             for(int k = 0; k < to[i-1].size(); k++){
      |                            ~~^~~~~~~~~~~~~~~~
fish.cpp:113:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  113 |                 for(int v = 0; v < to[i].size(); v++){
      |                                ~~^~~~~~~~~~~~~~
fish.cpp:110:13: warning: unused variable 'sz' [-Wunused-variable]
  110 |         int sz = 0;
      |             ^~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 3920 KB Output is correct
2 Correct 24 ms 5204 KB Output is correct
3 Correct 1 ms 1112 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Correct 74 ms 13668 KB Output is correct
6 Correct 73 ms 13908 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 40 ms 7508 KB Output is correct
3 Correct 48 ms 9172 KB Output is correct
4 Correct 20 ms 4312 KB Output is correct
5 Correct 24 ms 5212 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 1120 KB Output is correct
11 Correct 1 ms 1116 KB Output is correct
12 Correct 26 ms 4284 KB Output is correct
13 Correct 24 ms 5212 KB Output is correct
14 Correct 20 ms 4340 KB Output is correct
15 Correct 22 ms 4832 KB Output is correct
16 Correct 21 ms 4324 KB Output is correct
17 Correct 22 ms 4700 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 22 ms 20568 KB Output is correct
3 Correct 42 ms 22612 KB Output is correct
4 Correct 36 ms 23292 KB Output is correct
5 Correct 69 ms 27732 KB Output is correct
6 Correct 91 ms 27228 KB Output is correct
7 Correct 72 ms 27616 KB Output is correct
8 Correct 69 ms 27732 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 8 ms 860 KB Output is correct
10 Correct 54 ms 2392 KB Output is correct
11 Correct 7 ms 860 KB Output is correct
12 Correct 54 ms 2396 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 56 ms 2396 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 8 ms 860 KB Output is correct
10 Correct 54 ms 2392 KB Output is correct
11 Correct 7 ms 860 KB Output is correct
12 Correct 54 ms 2396 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 56 ms 2396 KB Output is correct
15 Correct 54 ms 2404 KB Output is correct
16 Correct 2 ms 600 KB Output is correct
17 Correct 65 ms 3640 KB Output is correct
18 Correct 67 ms 3420 KB Output is correct
19 Correct 63 ms 3416 KB Output is correct
20 Correct 63 ms 3420 KB Output is correct
21 Correct 64 ms 3628 KB Output is correct
22 Correct 74 ms 4432 KB Output is correct
23 Correct 68 ms 2764 KB Output is correct
24 Correct 60 ms 3416 KB Output is correct
25 Correct 53 ms 2592 KB Output is correct
26 Correct 55 ms 2652 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 8 ms 860 KB Output is correct
10 Correct 54 ms 2392 KB Output is correct
11 Correct 7 ms 860 KB Output is correct
12 Correct 54 ms 2396 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 56 ms 2396 KB Output is correct
15 Correct 54 ms 2404 KB Output is correct
16 Correct 2 ms 600 KB Output is correct
17 Correct 65 ms 3640 KB Output is correct
18 Correct 67 ms 3420 KB Output is correct
19 Correct 63 ms 3416 KB Output is correct
20 Correct 63 ms 3420 KB Output is correct
21 Correct 64 ms 3628 KB Output is correct
22 Correct 74 ms 4432 KB Output is correct
23 Correct 68 ms 2764 KB Output is correct
24 Correct 60 ms 3416 KB Output is correct
25 Correct 53 ms 2592 KB Output is correct
26 Correct 55 ms 2652 KB Output is correct
27 Correct 2 ms 1112 KB Output is correct
28 Execution timed out 1016 ms 13964 KB Time limit exceeded
29 Halted 0 ms 0 KB -

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 22 ms 20568 KB Output is correct
3 Correct 42 ms 22612 KB Output is correct
4 Correct 36 ms 23292 KB Output is correct
5 Correct 69 ms 27732 KB Output is correct
6 Correct 91 ms 27228 KB Output is correct
7 Correct 72 ms 27616 KB Output is correct
8 Correct 69 ms 27732 KB Output is correct
9 Correct 64 ms 27476 KB Output is correct
10 Correct 63 ms 16220 KB Output is correct
11 Correct 141 ms 32080 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 20 ms 20572 KB Output is correct
21 Correct 25 ms 20744 KB Output is correct
22 Correct 78 ms 27220 KB Output is correct
23 Correct 146 ms 32080 KB Output is correct
24 Correct 137 ms 32592 KB Output is correct

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 3920 KB Output is correct
2 Correct 24 ms 5204 KB Output is correct
3 Correct 1 ms 1112 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Correct 74 ms 13668 KB Output is correct
6 Correct 73 ms 13908 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 40 ms 7508 KB Output is correct
9 Correct 48 ms 9172 KB Output is correct
10 Correct 20 ms 4312 KB Output is correct
11 Correct 24 ms 5212 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 1120 KB Output is correct
17 Correct 1 ms 1116 KB Output is correct
18 Correct 26 ms 4284 KB Output is correct
19 Correct 24 ms 5212 KB Output is correct
20 Correct 20 ms 4340 KB Output is correct
21 Correct 22 ms 4832 KB Output is correct
22 Correct 21 ms 4324 KB Output is correct
23 Correct 22 ms 4700 KB Output is correct
24 Correct 1 ms 1116 KB Output is correct
25 Correct 22 ms 20568 KB Output is correct
26 Correct 42 ms 22612 KB Output is correct
27 Correct 36 ms 23292 KB Output is correct
28 Correct 69 ms 27732 KB Output is correct
29 Correct 91 ms 27228 KB Output is correct
30 Correct 72 ms 27616 KB Output is correct
31 Correct 69 ms 27732 KB Output is correct
32 Correct 0 ms 600 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 8 ms 860 KB Output is correct
41 Correct 54 ms 2392 KB Output is correct
42 Correct 7 ms 860 KB Output is correct
43 Correct 54 ms 2396 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 56 ms 2396 KB Output is correct
46 Correct 54 ms 2404 KB Output is correct
47 Correct 2 ms 600 KB Output is correct
48 Correct 65 ms 3640 KB Output is correct
49 Correct 67 ms 3420 KB Output is correct
50 Correct 63 ms 3416 KB Output is correct
51 Correct 63 ms 3420 KB Output is correct
52 Correct 64 ms 3628 KB Output is correct
53 Correct 74 ms 4432 KB Output is correct
54 Correct 68 ms 2764 KB Output is correct
55 Correct 60 ms 3416 KB Output is correct
56 Correct 53 ms 2592 KB Output is correct
57 Correct 55 ms 2652 KB Output is correct
58 Correct 2 ms 1112 KB Output is correct
59 Execution timed out 1016 ms 13964 KB Time limit exceeded
60 Halted 0 ms 0 KB -