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Submission #974595

# Submission time Handle Problem Language Result Execution time Memory
974595 2024-05-03T13:50:47 Z LucaIlie Carnival Tickets (IOI20_tickets) C++17
100 / 100
 723 ms 149388 KB 
#include "tickets.h"
#include <bits/stdc++.h>

using namespace std;

struct cell {
    int i, j, val;
};

const int MAX_N = 1500;
const int MAX_M = 1500;
int x[MAX_N + 1][MAX_M + 1], l[MAX_N];
long long sx[MAX_N + 1][MAX_M + 1];
vector<int> mins[MAX_N + 1], maxs[MAX_N + 1];
vector<cell> opt;

long long find_maximum( int k, vector<vector<int>> X ) {
    int n = X.size();
    int m = X[0].size();
    vector<vector<int>> answer( n );
    long long sum = 0;

    for ( int i = 1; i <= n; i++ ) {
        answer[i - 1].resize( m );
        for ( int j = 1; j <= m; j++ ) {
            x[i][j] = X[i - 1][j - 1];
            sx[i][j] = sx[i][j - 1] + x[i][j];
            answer[i - 1][j - 1] = -1;
        }
    }

    for ( int i = 1; i <= n; i++ ) {
        for ( int j = 1; j <= k; j++ ) {
            mins[i].push_back( j );
            opt.push_back( { i, m - (k - j), x[i][j] + x[i][m - (k - j)] } );
        }
    }

    sort( opt.begin(), opt.end(), []( cell a, cell b ) {
        if ( a.val == b.val )
            return a.j > b.j;
        return a.val > b.val;
    } );
    for ( int i = 0; i < n * k / 2; i++ ) {
        mins[opt[i].i].pop_back();
        maxs[opt[i].i].push_back( opt[i].j );
    }

    for ( int i = 1; i <= n; i++ ) {
        reverse( maxs[i].begin(), maxs[i].end());

        vector<pair<int, int>> pasi;
        for ( int pas = 0; pas < k; pas++ )
            pasi.push_back( { l[pas], pas } );
        sort( pasi.begin(), pasi.end() );

        int ind = 0;
        for ( int j: mins[i] ) {
            answer[i - 1][j - 1] = pasi[ind].second;
            l[pasi[ind].second]++;
            sum -= x[i][j];
            ind++;
        }
        for ( int j: maxs[i] ) {
            answer[i - 1][j - 1] = pasi[ind].second;
            sum += x[i][j];
            ind++;
        }
    }

    allocate_tickets( answer );
    return sum;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2908 KB Output is correct
5 Correct 1 ms 5724 KB Output is correct
6 Correct 5 ms 15964 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2908 KB Output is correct
5 Correct 23 ms 9500 KB Output is correct
6 Correct 409 ms 77908 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2592 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 3 ms 3160 KB Output is correct
5 Correct 19 ms 10600 KB Output is correct
6 Correct 468 ms 102896 KB Output is correct
7 Correct 488 ms 108052 KB Output is correct
8 Correct 3 ms 3420 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 8 ms 4168 KB Output is correct
13 Correct 18 ms 9908 KB Output is correct
14 Correct 19 ms 7680 KB Output is correct
15 Correct 543 ms 123744 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 3 ms 3164 KB Output is correct
5 Correct 27 ms 11592 KB Output is correct
6 Correct 6 ms 5184 KB Output is correct
7 Correct 9 ms 16476 KB Output is correct
8 Correct 695 ms 127200 KB Output is correct
9 Correct 639 ms 120280 KB Output is correct
10 Correct 658 ms 118476 KB Output is correct
11 Correct 723 ms 124728 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 2 ms 2908 KB Output is correct
3 Correct 3 ms 2908 KB Output is correct
4 Correct 2 ms 2908 KB Output is correct
5 Correct 2 ms 3160 KB Output is correct
6 Correct 2 ms 3164 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2908 KB Output is correct
9 Correct 2 ms 3164 KB Output is correct
10 Correct 2 ms 3164 KB Output is correct
11 Correct 3 ms 3160 KB Output is correct
12 Correct 3 ms 3164 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 2 ms 2908 KB Output is correct
3 Correct 3 ms 2908 KB Output is correct
4 Correct 2 ms 2908 KB Output is correct
5 Correct 2 ms 3160 KB Output is correct
6 Correct 2 ms 3164 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2908 KB Output is correct
9 Correct 2 ms 3164 KB Output is correct
10 Correct 2 ms 3164 KB Output is correct
11 Correct 3 ms 3160 KB Output is correct
12 Correct 3 ms 3164 KB Output is correct
13 Correct 18 ms 9564 KB Output is correct
14 Correct 18 ms 9696 KB Output is correct
15 Correct 23 ms 10508 KB Output is correct
16 Correct 30 ms 11512 KB Output is correct
17 Correct 2 ms 4700 KB Output is correct
18 Correct 3 ms 5980 KB Output is correct
19 Correct 2 ms 5724 KB Output is correct
20 Correct 24 ms 9700 KB Output is correct
21 Correct 23 ms 10496 KB Output is correct
22 Correct 27 ms 10248 KB Output is correct
23 Correct 26 ms 11276 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2908 KB Output is correct
5 Correct 1 ms 5724 KB Output is correct
6 Correct 5 ms 15964 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2908 KB Output is correct
11 Correct 23 ms 9500 KB Output is correct
12 Correct 409 ms 77908 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2592 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 3 ms 3160 KB Output is correct
17 Correct 19 ms 10600 KB Output is correct
18 Correct 468 ms 102896 KB Output is correct
19 Correct 488 ms 108052 KB Output is correct
20 Correct 3 ms 3420 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 8 ms 4168 KB Output is correct
25 Correct 18 ms 9908 KB Output is correct
26 Correct 19 ms 7680 KB Output is correct
27 Correct 543 ms 123744 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 3 ms 3164 KB Output is correct
32 Correct 27 ms 11592 KB Output is correct
33 Correct 6 ms 5184 KB Output is correct
34 Correct 9 ms 16476 KB Output is correct
35 Correct 695 ms 127200 KB Output is correct
36 Correct 639 ms 120280 KB Output is correct
37 Correct 658 ms 118476 KB Output is correct
38 Correct 723 ms 124728 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 2 ms 2908 KB Output is correct
41 Correct 3 ms 2908 KB Output is correct
42 Correct 2 ms 2908 KB Output is correct
43 Correct 2 ms 3160 KB Output is correct
44 Correct 2 ms 3164 KB Output is correct
45 Correct 1 ms 2652 KB Output is correct
46 Correct 1 ms 2908 KB Output is correct
47 Correct 2 ms 3164 KB Output is correct
48 Correct 2 ms 3164 KB Output is correct
49 Correct 3 ms 3160 KB Output is correct
50 Correct 3 ms 3164 KB Output is correct
51 Correct 18 ms 9564 KB Output is correct
52 Correct 18 ms 9696 KB Output is correct
53 Correct 23 ms 10508 KB Output is correct
54 Correct 30 ms 11512 KB Output is correct
55 Correct 2 ms 4700 KB Output is correct
56 Correct 3 ms 5980 KB Output is correct
57 Correct 2 ms 5724 KB Output is correct
58 Correct 24 ms 9700 KB Output is correct
59 Correct 23 ms 10496 KB Output is correct
60 Correct 27 ms 10248 KB Output is correct
61 Correct 26 ms 11276 KB Output is correct
62 Correct 47 ms 17244 KB Output is correct
63 Correct 50 ms 17416 KB Output is correct
64 Correct 78 ms 22228 KB Output is correct
65 Correct 269 ms 63192 KB Output is correct
66 Correct 308 ms 73440 KB Output is correct
67 Correct 10 ms 16732 KB Output is correct
68 Correct 5 ms 5540 KB Output is correct
69 Correct 438 ms 100068 KB Output is correct
70 Correct 565 ms 123856 KB Output is correct
71 Correct 697 ms 149388 KB Output is correct
72 Correct 621 ms 129952 KB Output is correct
73 Correct 676 ms 141060 KB Output is correct
74 Correct 515 ms 110512 KB Output is correct
75 Correct 556 ms 121428 KB Output is correct