oj.uz

Submission #632029

# Submission time Handle Problem Language Result Execution time Memory
632029 2022-08-19T10:28:00 Z timreizin Catfish Farm (IOI22_fish) C++17
9 / 100
 1000 ms 15440 KB 
#include "fish.h"

#include <vector>
#include <algorithm>

using namespace std;

using ll = long long;

ll solve(vector<vector<pair<int, ll>>> &fish, int n)
{
    ll res = 0;
    vector<vector<ll>> dp0(fish.size()), dp1(fish.size());
    for (int i = 0; i < fish.size(); ++i)
    {
        fish[i].emplace_back(n, 0);
        dp0[i].resize(fish[i].size());
        ll mx = 0;
        if (i != 0)
        {
            for (int j = 0; j < fish[i - 1].size(); ++j)
            {
                mx = max(mx, dp1[i - 1][j]);
            }
            fill(dp0[i].begin(), dp0[i].end(), mx);
            mx = 0;
        }
        for (int j = 0, k = 0; j < fish[i].size(); ++j)
        {
            if (i != 0)
            {
                while (k < fish[i - 1].size() && fish[i - 1][k].first < fish[i][j].first)
                {
                    mx = max(mx, dp0[i - 1][k]);
                    mx += fish[i - 1][k].second;
                    ++k;
                }
            }
            dp0[i][j] = max(mx, dp0[i][j]);
        }
        dp1 = dp0;
        if (i != 0)
        {
            ll mx = 0;
            for (int j = (int)fish[i].size() - 1, k = (int)fish[i - 1].size() - 1; j >= 0; --j)
            {
                while (k >= 0 && fish[i - 1][k].first > fish[i][j].first)
                {
                    mx = max(mx, dp1[i - 1][k]);
                    --k;
                }
                mx += fish[i][j].second;
                dp1[i][j] = max(dp1[i][j], mx);
                res = max(dp1[i][j], res);
            }
        }
    }
    return res;
}

ll max_weights(int n, int m, vector<int> X, vector<int> Y, vector<int> W)
{
    vector<tuple<int, int, ll>> xyw(m);
    for (int i = 0; i < m; ++i) xyw[i] = {X[i], Y[i], W[i]};
    sort(xyw.begin(), xyw.end());
    ll res = 0;
    vector<vector<pair<int, ll>>> tos;
    int prevX = -1;
    for (auto [x, y, w] : xyw)
    {
        if (x > prevX + 1)
        {
            tos.push_back(vector<pair<int, ll>>());
            res += solve(tos, n);
            tos.clear();
            tos.push_back(vector<pair<int, ll>>());
            prevX = x - 1;
        }
        if (x == prevX + 1)
        {
            tos.push_back(vector<pair<int, ll>>());
        }
        tos.back().emplace_back(y, w);
        prevX = x;
    }
    if (prevX != n - 1) tos.push_back(vector<pair<int, ll>>());
    res += solve(tos, n);
    return res;
}

Compilation message

fish.cpp: In function 'll solve(std::vector<std::vector<std::pair<int, long long int> > >&, int)':
fish.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 0; i < fish.size(); ++i)
      |                     ~~^~~~~~~~~~~~~
fish.cpp:21:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |             for (int j = 0; j < fish[i - 1].size(); ++j)
      |                             ~~^~~~~~~~~~~~~~~~~~~~
fish.cpp:28:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |         for (int j = 0, k = 0; j < fish[i].size(); ++j)
      |                                ~~^~~~~~~~~~~~~~~~
fish.cpp:32:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |                 while (k < fish[i - 1].size() && fish[i - 1][k].first < fish[i][j].first)
      |                        ~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 5956 KB Output is correct
2 Correct 43 ms 7324 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 126 ms 15440 KB Output is correct
6 Correct 169 ms 11988 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 68 ms 11648 KB Output is correct
3 Correct 95 ms 14400 KB Output is correct
4 Correct 32 ms 5892 KB Output is correct
5 Correct 40 ms 7268 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 39 ms 5896 KB Output is correct
13 Correct 46 ms 7268 KB Output is correct
14 Correct 34 ms 5908 KB Output is correct
15 Correct 40 ms 6592 KB Output is correct
16 Correct 34 ms 5972 KB Output is correct
17 Correct 49 ms 6596 KB Output is correct

Subtask #3
0 / 9.0

# 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 127 ms 2516 KB Output is correct
4 Execution timed out 1087 ms 3500 KB Time limit exceeded
5 Halted 0 ms 0 KB -

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 1 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 Incorrect 1 ms 212 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 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 1 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 Incorrect 1 ms 212 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 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 1 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 Incorrect 1 ms 212 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
9 Halted 0 ms 0 KB -

Subtask #7
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 127 ms 2516 KB Output is correct
4 Execution timed out 1087 ms 3500 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 5956 KB Output is correct
2 Correct 43 ms 7324 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 126 ms 15440 KB Output is correct
6 Correct 169 ms 11988 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 68 ms 11648 KB Output is correct
9 Correct 95 ms 14400 KB Output is correct
10 Correct 32 ms 5892 KB Output is correct
11 Correct 40 ms 7268 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 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 39 ms 5896 KB Output is correct
19 Correct 46 ms 7268 KB Output is correct
20 Correct 34 ms 5908 KB Output is correct
21 Correct 40 ms 6592 KB Output is correct
22 Correct 34 ms 5972 KB Output is correct
23 Correct 49 ms 6596 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 127 ms 2516 KB Output is correct
27 Execution timed out 1087 ms 3500 KB Time limit exceeded
28 Halted 0 ms 0 KB -