oj.uz

Submission #703025

# Submission time Handle Problem Language Result Execution time Memory
703025 2023-02-25T16:01:56 Z 406 Swap (BOI16_swap) C++17
48 / 100
 1000 ms 42988 KB 
#include "bits/stdc++.h"
using namespace std;
#define int long long
const int N = 2e5 + 5;
const int L = 20;
const long long INF = 1ll << 60;
unordered_map<int, vector<int>> dp[N];
int n, a[4 * N];

void merge(vector<int> &a, const vector<int> b, const vector<int> c) {
    assert(b.size() && c.size());
    assert(b.size() == c.size());
    int ptr = 0;
    for (int i = 0; ptr < b.size(); i++) {
        for (int j = 0; j < (1 << i); j++) {
            a.push_back(b[j + ptr]);
        }
        for (int j = 0; j < (1 << i); j++) {
            a.push_back(c[j + ptr]);
        }
        ptr += 1 << i;
    }
}   

void DP(int i, int j) {
    if (i >= n / 2) {
        dp[i][j] = {j};
        return;
    }
    int r = a[2 * i + 1];
    int l = a[2 * i];
    if (j <= l && j <= r) {
        DP(i * 2, l);
        DP(i * 2 + 1, r);
        vector<int> re{j};
        merge(re, dp[i << 1][l], dp[i << 1 | 1][r]);
        dp[i][j] = re;
        return;
    }
    
    if (j <= l) {
        DP(i * 2, j);
        DP(i * 2 + 1, j);
        DP(i * 2, l);
        DP(i * 2 + 1, l);
        vector<int> re{r};
        merge(re, dp[i * 2][l], dp[i * 2 + 1][j]);

        vector<int> re2{r};
        merge(re2, dp[i * 2][j], dp[i * 2 + 1][l]);

        dp[i][j] = min(re, re2);
        return;
    }
    if (j <= r) {
        DP(i * 2, j);
        DP(i * 2 + 1, r);
        vector<int> re{l};
        merge(re, dp[i << 1][j], dp[i << 1 | 1][r]);
        dp[i][j] = re;
        return;
    }
    if (r < l) {
        DP(i * 2, l);
        DP(i * 2 + 1, j);
        DP(i * 2, j);
        DP(i * 2 + 1, l);

        vector<int> re{r};
        merge(re, dp[i * 2][l], dp[i * 2 + 1][j]);

        vector<int> re2{r};
        merge(re2, dp[i * 2][j], dp[i * 2 + 1][l]);
        dp[i][j] = min(re, re2);
    }
    else {
        DP(i * 2 + 1, r);
        DP(i * 2, j);

        vector<int> re{l}; 
        merge(re, dp[i * 2][j], dp[i * 2 + 1][r]);
        dp[i][j] = re;
    }
}

signed main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    cin >> n;
    for (int i = 1; i <= n; i++) 
        cin >> a[i];

    while (n & (n - 1)) {
        a[++n] = INF;
    }

    DP(1, a[1]);
    for (auto u: dp[1][a[1]]) if (u != INF)
        cout << u << ' ';
    cout << '\n';

    return 0;
}

Compilation message

swap.cpp: In function 'void merge(std::vector<long long int>&, std::vector<long long int>, std::vector<long long int>)':
swap.cpp:14:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 0; ptr < b.size(); i++) {
      |                     ~~~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11220 KB Output is correct
2 Correct 6 ms 11220 KB Output is correct
3 Correct 6 ms 11220 KB Output is correct
4 Correct 6 ms 11220 KB Output is correct
5 Correct 6 ms 11236 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11220 KB Output is correct
2 Correct 6 ms 11220 KB Output is correct
3 Correct 6 ms 11220 KB Output is correct
4 Correct 6 ms 11220 KB Output is correct
5 Correct 6 ms 11236 KB Output is correct
6 Correct 6 ms 11220 KB Output is correct
7 Correct 6 ms 11220 KB Output is correct
8 Correct 6 ms 11220 KB Output is correct
9 Correct 6 ms 11220 KB Output is correct
10 Correct 8 ms 11220 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11220 KB Output is correct
2 Correct 6 ms 11220 KB Output is correct
3 Correct 6 ms 11220 KB Output is correct
4 Correct 6 ms 11220 KB Output is correct
5 Correct 6 ms 11236 KB Output is correct
6 Correct 6 ms 11220 KB Output is correct
7 Correct 6 ms 11220 KB Output is correct
8 Correct 6 ms 11220 KB Output is correct
9 Correct 6 ms 11220 KB Output is correct
10 Correct 8 ms 11220 KB Output is correct
11 Correct 9 ms 11696 KB Output is correct
12 Correct 13 ms 11732 KB Output is correct
13 Correct 8 ms 11604 KB Output is correct
14 Correct 38 ms 12224 KB Output is correct
15 Correct 42 ms 12252 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11220 KB Output is correct
2 Correct 6 ms 11220 KB Output is correct
3 Correct 6 ms 11220 KB Output is correct
4 Correct 6 ms 11220 KB Output is correct
5 Correct 6 ms 11236 KB Output is correct
6 Correct 6 ms 11220 KB Output is correct
7 Correct 6 ms 11220 KB Output is correct
8 Correct 6 ms 11220 KB Output is correct
9 Correct 6 ms 11220 KB Output is correct
10 Correct 8 ms 11220 KB Output is correct
11 Correct 9 ms 11696 KB Output is correct
12 Correct 13 ms 11732 KB Output is correct
13 Correct 8 ms 11604 KB Output is correct
14 Correct 38 ms 12224 KB Output is correct
15 Correct 42 ms 12252 KB Output is correct
16 Correct 713 ms 42988 KB Output is correct
17 Correct 414 ms 41596 KB Output is correct
18 Correct 557 ms 42500 KB Output is correct
19 Execution timed out 1061 ms 22360 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11220 KB Output is correct
2 Correct 6 ms 11220 KB Output is correct
3 Correct 6 ms 11220 KB Output is correct
4 Correct 6 ms 11220 KB Output is correct
5 Correct 6 ms 11236 KB Output is correct
6 Correct 6 ms 11220 KB Output is correct
7 Correct 6 ms 11220 KB Output is correct
8 Correct 6 ms 11220 KB Output is correct
9 Correct 6 ms 11220 KB Output is correct
10 Correct 8 ms 11220 KB Output is correct
11 Correct 9 ms 11696 KB Output is correct
12 Correct 13 ms 11732 KB Output is correct
13 Correct 8 ms 11604 KB Output is correct
14 Correct 38 ms 12224 KB Output is correct
15 Correct 42 ms 12252 KB Output is correct
16 Correct 713 ms 42988 KB Output is correct
17 Correct 414 ms 41596 KB Output is correct
18 Correct 557 ms 42500 KB Output is correct
19 Execution timed out 1061 ms 22360 KB Time limit exceeded
20 Halted 0 ms 0 KB -