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Submission #1069672

# Submission time Handle Problem Language Result Execution time Memory
1069672 2024-08-22T08:01:19 Z mc061 Roller Coaster Railroad (IOI16_railroad) C++14
34 / 100
 37 ms 15184 KB 
#pragma once

#include <bits/stdc++.h>
using namespace std;

const int N = 16;
int64_t ham_path[1<<N][N];
int64_t dist[N][N];

long long plan_roller_coaster(vector<int> s, vector<int> t) {
    const int n = s.size();

    for (int i = 0; i < (1<<n); ++i) {
        fill(ham_path[i], ham_path[i]+n, 1e18);
    }
    ham_path[0][0] = 0;
    for (int i = 0; i < n; ++i) {
        ham_path[1<<i][i] = 0;
    }
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            if (i==j) {
                dist[i][j]=1e18;
                continue;
            }
            dist[i][j] = max(0, t[i]-s[j]);
        }
    }

    for (int m = 1; m < (1<<n); ++m) {
        vector<int> bits;
        for (int bit = 0; bit < n; ++bit) {
            if ((m & (1 << bit)) == 0) continue;
            bits.push_back(bit);
        }
        if (bits.size() == 1) {
            continue;
        }
        for (int i = 0; i < bits.size(); ++i) {
            int prev_m = m ^ (1 << bits[i]);
            assert(prev_m < m);
            for (int j = 0; j < bits.size(); ++j) {
                if (i == j) continue;
                ham_path[m][bits[i]] = min(ham_path[m][bits[i]], ham_path[prev_m][bits[j]] + dist[bits[j]][bits[i]]);
            }
        }
    }
    return *min_element(ham_path[(1<<n)-1], ham_path[(1<<n)-1]+n);
}

Compilation message

railroad.cpp:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:39:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         for (int i = 0; i < bits.size(); ++i) {
      |                         ~~^~~~~~~~~~~~~
railroad.cpp:42:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |             for (int j = 0; j < bits.size(); ++j) {
      |                             ~~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n = 2
2 Correct 0 ms 348 KB n = 2
3 Correct 0 ms 348 KB n = 2
4 Correct 0 ms 348 KB n = 2
5 Correct 0 ms 348 KB n = 2
6 Correct 0 ms 348 KB n = 2
7 Correct 0 ms 344 KB n = 3
8 Correct 0 ms 348 KB n = 3
9 Correct 0 ms 348 KB n = 3
10 Correct 1 ms 348 KB n = 8
11 Correct 1 ms 348 KB n = 8
12 Correct 1 ms 348 KB n = 8
13 Correct 0 ms 348 KB n = 8
14 Correct 0 ms 348 KB n = 8
15 Correct 0 ms 348 KB n = 8
16 Correct 0 ms 348 KB n = 8
17 Correct 0 ms 348 KB n = 8
18 Correct 1 ms 348 KB n = 8
19 Correct 0 ms 348 KB n = 3
20 Correct 1 ms 348 KB n = 7
21 Correct 1 ms 348 KB n = 8
22 Correct 1 ms 348 KB n = 8
23 Correct 1 ms 344 KB n = 8
24 Correct 1 ms 348 KB n = 8
25 Correct 0 ms 348 KB n = 8

Subtask #2
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n = 2
2 Correct 0 ms 348 KB n = 2
3 Correct 0 ms 348 KB n = 2
4 Correct 0 ms 348 KB n = 2
5 Correct 0 ms 348 KB n = 2
6 Correct 0 ms 348 KB n = 2
7 Correct 0 ms 344 KB n = 3
8 Correct 0 ms 348 KB n = 3
9 Correct 0 ms 348 KB n = 3
10 Correct 1 ms 348 KB n = 8
11 Correct 1 ms 348 KB n = 8
12 Correct 1 ms 348 KB n = 8
13 Correct 0 ms 348 KB n = 8
14 Correct 0 ms 348 KB n = 8
15 Correct 0 ms 348 KB n = 8
16 Correct 0 ms 348 KB n = 8
17 Correct 0 ms 348 KB n = 8
18 Correct 1 ms 348 KB n = 8
19 Correct 0 ms 348 KB n = 3
20 Correct 1 ms 348 KB n = 7
21 Correct 1 ms 348 KB n = 8
22 Correct 1 ms 348 KB n = 8
23 Correct 1 ms 344 KB n = 8
24 Correct 1 ms 348 KB n = 8
25 Correct 0 ms 348 KB n = 8
26 Correct 0 ms 348 KB n = 8
27 Correct 0 ms 348 KB n = 8
28 Correct 0 ms 348 KB n = 8
29 Correct 18 ms 8540 KB n = 16
30 Correct 22 ms 8796 KB n = 16
31 Correct 18 ms 8540 KB n = 16
32 Correct 27 ms 8640 KB n = 16
33 Correct 18 ms 8540 KB n = 16
34 Correct 18 ms 8536 KB n = 16
35 Correct 19 ms 8644 KB n = 16
36 Correct 9 ms 4700 KB n = 15
37 Correct 0 ms 348 KB n = 8
38 Correct 24 ms 8540 KB n = 16
39 Correct 18 ms 8540 KB n = 16
40 Correct 1 ms 344 KB n = 9
41 Correct 19 ms 8648 KB n = 16
42 Correct 29 ms 8644 KB n = 16
43 Correct 19 ms 8536 KB n = 16
44 Correct 1 ms 348 KB n = 9
45 Correct 9 ms 4700 KB n = 15
46 Correct 19 ms 8648 KB n = 16
47 Correct 19 ms 8536 KB n = 16
48 Correct 29 ms 8652 KB n = 16

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 37 ms 15184 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n = 2
2 Correct 0 ms 348 KB n = 2
3 Correct 0 ms 348 KB n = 2
4 Correct 0 ms 348 KB n = 2
5 Correct 0 ms 348 KB n = 2
6 Correct 0 ms 348 KB n = 2
7 Correct 0 ms 344 KB n = 3
8 Correct 0 ms 348 KB n = 3
9 Correct 0 ms 348 KB n = 3
10 Correct 1 ms 348 KB n = 8
11 Correct 1 ms 348 KB n = 8
12 Correct 1 ms 348 KB n = 8
13 Correct 0 ms 348 KB n = 8
14 Correct 0 ms 348 KB n = 8
15 Correct 0 ms 348 KB n = 8
16 Correct 0 ms 348 KB n = 8
17 Correct 0 ms 348 KB n = 8
18 Correct 1 ms 348 KB n = 8
19 Correct 0 ms 348 KB n = 3
20 Correct 1 ms 348 KB n = 7
21 Correct 1 ms 348 KB n = 8
22 Correct 1 ms 348 KB n = 8
23 Correct 1 ms 344 KB n = 8
24 Correct 1 ms 348 KB n = 8
25 Correct 0 ms 348 KB n = 8
26 Correct 0 ms 348 KB n = 8
27 Correct 0 ms 348 KB n = 8
28 Correct 0 ms 348 KB n = 8
29 Correct 18 ms 8540 KB n = 16
30 Correct 22 ms 8796 KB n = 16
31 Correct 18 ms 8540 KB n = 16
32 Correct 27 ms 8640 KB n = 16
33 Correct 18 ms 8540 KB n = 16
34 Correct 18 ms 8536 KB n = 16
35 Correct 19 ms 8644 KB n = 16
36 Correct 9 ms 4700 KB n = 15
37 Correct 0 ms 348 KB n = 8
38 Correct 24 ms 8540 KB n = 16
39 Correct 18 ms 8540 KB n = 16
40 Correct 1 ms 344 KB n = 9
41 Correct 19 ms 8648 KB n = 16
42 Correct 29 ms 8644 KB n = 16
43 Correct 19 ms 8536 KB n = 16
44 Correct 1 ms 348 KB n = 9
45 Correct 9 ms 4700 KB n = 15
46 Correct 19 ms 8648 KB n = 16
47 Correct 19 ms 8536 KB n = 16
48 Correct 29 ms 8652 KB n = 16
49 Runtime error 37 ms 15184 KB Execution killed with signal 11
50 Halted 0 ms 0 KB -