oj.uz

Submission #628194

# Submission time Handle Problem Language Result Execution time Memory
628194 2022-08-13T07:39:08 Z MarkBcc168 Catfish Farm (IOI22_fish) C++17
18 / 100
 129 ms 20336 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long

long long max_weights(int n, int m, std::vector<int> x, std::vector<int> y, std::vector<int> w){
    vector<ll> col[n];
    for(int i=0; i<m; ++i){
        col[x[i]].push_back(i);
    }
    for(int i=0; i<n; ++i){
        sort(col[i].begin(), col[i].end(),
            [&](int p, int q){return y[p] < y[q];});
    }
    vector<ll> up(m,0), down(m,0);
    vector<ll> up_max(n,0), down_max(n,0);
    for(int i=0; i<n; ++i){
        if(col[i].size() == 0){
            if(i==0){
                up_max[i] = 0;
                down_max[i] = 0;
            }
            else{
                up_max[i] = up_max[i-1];
                down_max[i] = down_max[i-1];
            }
            continue;
        }
            
        //case 1: delete (i-1)-st column and start over
        ll mx = (i<2) ? 0LL : max(up_max[i-2], down_max[i-1]);
        for(int j=0; j<col[i].size(); ++j){
            if(j==0) up[col[i][0]] = mx + w[col[i][0]];
            else{
                up[col[i][j]] = up[col[i][j-1]] + w[col[i][j]];
            }
        }
        if(i > 0){
            mx = (i<2) ? 0LL : max(up_max[i-2], down_max[i-2]);
            for(int j=col[i].size()-1; j>=0; --j){
                if(j==col[i].size()-1) down[col[i][j]] = mx + w[col[i][j]];
                else{
                    down[col[i][j]] = down[col[i][j+1]] + w[col[i][j]];
                }
            }
        }
        
        //case 2: actually using the previous column
        if(i>0 && col[i-1].size() > 0){
            int p, x = col[i-1].size();
            p = -1;

            for(int j=0; j<col[i].size(); j++){
                while(p < x-1 && y[col[i-1][p+1]] < y[col[i][j]]) p++;
                if(p==-1) continue;
                if(j==0) up[col[i][j]] = max(up[col[i][j]], up[col[i-1][p]] + w[col[i][j]]);
                else{
                    up[col[i][j]] = max({up[col[i][j]],
                        up[col[i-1][p]] + w[col[i][j]],
                        up[col[i][j-1]] + w[col[i][j]]});
                }
            }
            p = x;
            if(i>1){
                for(int j=x-1; j>=0; j--){
                    while(p > 0 && y[col[i-1][p-1]] > y[col[i][j]]) p--;
                    if(p==x) continue;
                    if(j==x-1) down[col[i][j]] = max(down[col[i][j]], down[col[i-1][p]] + w[col[i][j]]);
                    else{
                        down[col[i][j]] = max({down[col[i][j]],
                            down[col[i-1][p]] + w[col[i][j]],
                            down[col[i][j+1]] + w[col[i][j]]});
                    }
                }
            }
        }
        if(i==0){
            up_max[i] = up[col[i][col[i].size()-1]];
            down_max[i] = down[col[i][0]];
        }
        else{
            up_max[i] = max(up_max[i-1], up[col[i][col[i].size()-1]]);
            down_max[i] = max(down_max[i-1], down[col[i][0]]);
        }
    }
    /*for(int i=0; i<n; ++i){
        cout << up_max[i] << " " << down_max[i] << "\n";
    }*/
    return max(up_max[n-2], down_max[n-1]);
}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:31:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |         for(int j=0; j<col[i].size(); ++j){
      |                      ~^~~~~~~~~~~~~~
fish.cpp:40:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |                 if(j==col[i].size()-1) down[col[i][j]] = mx + w[col[i][j]];
      |                    ~^~~~~~~~~~~~~~~~~
fish.cpp:52:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |             for(int j=0; j<col[i].size(); j++){
      |                          ~^~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 7620 KB Output is correct
2 Correct 39 ms 9016 KB Output is correct
3 Correct 3 ms 4180 KB Output is correct
4 Correct 3 ms 4180 KB Output is correct
5 Correct 120 ms 18504 KB Output is correct
6 Correct 129 ms 20336 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 66 ms 11560 KB Output is correct
3 Correct 80 ms 13752 KB Output is correct
4 Correct 35 ms 7640 KB Output is correct
5 Correct 41 ms 9024 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 256 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 3 ms 4180 KB Output is correct
11 Correct 3 ms 4180 KB Output is correct
12 Correct 33 ms 7772 KB Output is correct
13 Correct 40 ms 9024 KB Output is correct
14 Correct 32 ms 7800 KB Output is correct
15 Correct 38 ms 8668 KB Output is correct
16 Correct 35 ms 7780 KB Output is correct
17 Correct 37 ms 8612 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4264 KB Output is correct
2 Correct 3 ms 4180 KB Output is correct
3 Correct 24 ms 7508 KB Output is correct
4 Correct 17 ms 6760 KB Output is correct
5 Correct 46 ms 11204 KB Output is correct
6 Correct 48 ms 11264 KB Output is correct
7 Correct 46 ms 11204 KB Output is correct
8 Correct 44 ms 11212 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory 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 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 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Runtime error 1 ms 468 KB Execution killed with signal 11
12 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory 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 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 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Runtime error 1 ms 468 KB Execution killed with signal 11
12 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory 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 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 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Runtime error 1 ms 468 KB Execution killed with signal 11
12 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4264 KB Output is correct
2 Correct 3 ms 4180 KB Output is correct
3 Correct 24 ms 7508 KB Output is correct
4 Correct 17 ms 6760 KB Output is correct
5 Correct 46 ms 11204 KB Output is correct
6 Correct 48 ms 11264 KB Output is correct
7 Correct 46 ms 11204 KB Output is correct
8 Correct 44 ms 11212 KB Output is correct
9 Correct 47 ms 11212 KB Output is correct
10 Correct 40 ms 7648 KB Output is correct
11 Correct 99 ms 15952 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 3 ms 4180 KB Output is correct
19 Correct 3 ms 4180 KB Output is correct
20 Correct 3 ms 4180 KB Output is correct
21 Correct 3 ms 4180 KB Output is correct
22 Incorrect 49 ms 10356 KB 1st lines differ - on the 1st token, expected: '45561826463480', found: '45639306245662'
23 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 7620 KB Output is correct
2 Correct 39 ms 9016 KB Output is correct
3 Correct 3 ms 4180 KB Output is correct
4 Correct 3 ms 4180 KB Output is correct
5 Correct 120 ms 18504 KB Output is correct
6 Correct 129 ms 20336 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 66 ms 11560 KB Output is correct
9 Correct 80 ms 13752 KB Output is correct
10 Correct 35 ms 7640 KB Output is correct
11 Correct 41 ms 9024 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 256 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 4180 KB Output is correct
17 Correct 3 ms 4180 KB Output is correct
18 Correct 33 ms 7772 KB Output is correct
19 Correct 40 ms 9024 KB Output is correct
20 Correct 32 ms 7800 KB Output is correct
21 Correct 38 ms 8668 KB Output is correct
22 Correct 35 ms 7780 KB Output is correct
23 Correct 37 ms 8612 KB Output is correct
24 Correct 3 ms 4264 KB Output is correct
25 Correct 3 ms 4180 KB Output is correct
26 Correct 24 ms 7508 KB Output is correct
27 Correct 17 ms 6760 KB Output is correct
28 Correct 46 ms 11204 KB Output is correct
29 Correct 48 ms 11264 KB Output is correct
30 Correct 46 ms 11204 KB Output is correct
31 Correct 44 ms 11212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 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 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Runtime error 1 ms 468 KB Execution killed with signal 11
43 Halted 0 ms 0 KB -