oj.uz

답안 #245611

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
245611 2020-07-07T01:05:45 Z thecodingwizard Swap (BOI16_swap) C++11
68 / 100
 377 ms 262148 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxn = 200000;

int n, A[maxn+10];
vector<int> dp[maxn+10][36], tmp1, tmp2;
bool v[maxn+10][40];

void merge(vector<int> &res, int root, vector<int> &L, vector<int> &R) {
    res.push_back(root);
    int lidx = 0, ridx = 0;
    int cur = 1;
    while (lidx < L.size() || ridx < R.size()) {
        for (int i = 0; i < cur; i++) {
            if (lidx < L.size()) res.push_back(L[lidx++]);
        }
        for (int i = 0; i < cur; i++) {
            if (ridx < R.size()) res.push_back(R[ridx++]);
        }
        cur *= 2;
    }
}

int main() {
    cin.tie(0); ios_base::sync_with_stdio(0);
    cin >> n; for (int i = 1; i <= n; i++) cin >> A[i];
    for (int i = 1; i <= n; i++) for (int j = 0; j < 36; j++) v[i][j] = false;
    v[1][0] = 1;
    for (int i = 1; i <= n; i++) {
        for (int j = 0; j < 36; j++) {
            if (!v[i][j]) continue;
            if (2*i<=n) v[2*i][0] = v[2*i][j+2] = v[2*i][3] = true;
            if (2*i+1<=n) v[2*i+1][0] = v[2*i+1][j+2] = v[2*i+1][3] = true;
        }
    }
    for (int i = n; i; i--) {
        int l = i*2, r = i*2+1;
        for (int j = 0; j < 36; j++) {
            if (!v[i][j]) continue;
            int idx = i, p = j;
            while (p >= 2) {
                p -= 2;
                idx /= 2;
            }
            if (p == 1) idx *= 2;

            int cur = A[idx];

            if (l > n && r > n) {
                dp[i][j].push_back(cur);
                continue;
            } else if (r > n) {
                if (A[l] < cur) {
                    dp[i][j].push_back(A[l]);
                    dp[i][j].push_back(cur);
                } else {
                    dp[i][j].push_back(cur);
                    dp[i][j].push_back(A[l]);
                }
                continue;
            }

            int L = A[l], R = A[r];
            // no swap
            if (cur < L && cur < R) {
                merge(dp[i][j], cur, dp[l][0], dp[r][0]);
                continue;
            }

            // swap left
            if (cur > L && L < R) {
                merge(dp[i][j], L, dp[l][j+2], dp[r][0]);
                continue;
            }

            if (R < cur && R < L) {
                tmp1 = {}, tmp2 = {};
                // swap right
                merge(tmp1, R, dp[l][0], dp[r][j+2]);
                // swap both
                merge(tmp2, R, dp[l][j+2], dp[r][3]);
                dp[i][j] = min(tmp1, tmp2);
            }
        }

        if (l <= n) {
            for (int j = 0; j < 36; j++) vector<int>().swap(dp[l][j]);
        }
        if (r <= n) {
            for (int j = 0; j < 36; j++) vector<int>().swap(dp[r][j]);
        }
    }
    for (int v : dp[1][0]) cout << v << " ";
    cout << "\n";
    return 0;
}

Compilation message

swap.cpp: In function 'void merge(std::vector<int>&, int, std::vector<int>&, std::vector<int>&)':
swap.cpp:15:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while (lidx < L.size() || ridx < R.size()) {
            ~~~~~^~~~~~~~~~
swap.cpp:15:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while (lidx < L.size() || ridx < R.size()) {
                               ~~~~~^~~~~~~~~~
swap.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if (lidx < L.size()) res.push_back(L[lidx++]);
                 ~~~~~^~~~~~~~~~
swap.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if (ridx < R.size()) res.push_back(R[ridx++]);
                 ~~~~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 112 ms 169592 KB Output is correct
2 Correct 105 ms 169464 KB Output is correct
3 Correct 115 ms 169464 KB Output is correct
4 Correct 100 ms 169464 KB Output is correct
5 Correct 109 ms 169592 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 112 ms 169592 KB Output is correct
2 Correct 105 ms 169464 KB Output is correct
3 Correct 115 ms 169464 KB Output is correct
4 Correct 100 ms 169464 KB Output is correct
5 Correct 109 ms 169592 KB Output is correct
6 Correct 101 ms 169464 KB Output is correct
7 Correct 105 ms 169464 KB Output is correct
8 Correct 115 ms 169440 KB Output is correct
9 Correct 102 ms 169464 KB Output is correct
10 Correct 103 ms 169464 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 112 ms 169592 KB Output is correct
2 Correct 105 ms 169464 KB Output is correct
3 Correct 115 ms 169464 KB Output is correct
4 Correct 100 ms 169464 KB Output is correct
5 Correct 109 ms 169592 KB Output is correct
6 Correct 101 ms 169464 KB Output is correct
7 Correct 105 ms 169464 KB Output is correct
8 Correct 115 ms 169440 KB Output is correct
9 Correct 102 ms 169464 KB Output is correct
10 Correct 103 ms 169464 KB Output is correct
11 Correct 119 ms 169848 KB Output is correct
12 Correct 108 ms 169720 KB Output is correct
13 Correct 105 ms 169848 KB Output is correct
14 Correct 105 ms 169976 KB Output is correct
15 Correct 106 ms 169848 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 112 ms 169592 KB Output is correct
2 Correct 105 ms 169464 KB Output is correct
3 Correct 115 ms 169464 KB Output is correct
4 Correct 100 ms 169464 KB Output is correct
5 Correct 109 ms 169592 KB Output is correct
6 Correct 101 ms 169464 KB Output is correct
7 Correct 105 ms 169464 KB Output is correct
8 Correct 115 ms 169440 KB Output is correct
9 Correct 102 ms 169464 KB Output is correct
10 Correct 103 ms 169464 KB Output is correct
11 Correct 119 ms 169848 KB Output is correct
12 Correct 108 ms 169720 KB Output is correct
13 Correct 105 ms 169848 KB Output is correct
14 Correct 105 ms 169976 KB Output is correct
15 Correct 106 ms 169848 KB Output is correct
16 Correct 372 ms 195552 KB Output is correct
17 Correct 359 ms 195448 KB Output is correct
18 Correct 353 ms 195448 KB Output is correct
19 Correct 377 ms 195456 KB Output is correct
20 Correct 342 ms 195448 KB Output is correct

Subtask #5
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 112 ms 169592 KB Output is correct
2 Correct 105 ms 169464 KB Output is correct
3 Correct 115 ms 169464 KB Output is correct
4 Correct 100 ms 169464 KB Output is correct
5 Correct 109 ms 169592 KB Output is correct
6 Correct 101 ms 169464 KB Output is correct
7 Correct 105 ms 169464 KB Output is correct
8 Correct 115 ms 169440 KB Output is correct
9 Correct 102 ms 169464 KB Output is correct
10 Correct 103 ms 169464 KB Output is correct
11 Correct 119 ms 169848 KB Output is correct
12 Correct 108 ms 169720 KB Output is correct
13 Correct 105 ms 169848 KB Output is correct
14 Correct 105 ms 169976 KB Output is correct
15 Correct 106 ms 169848 KB Output is correct
16 Correct 372 ms 195552 KB Output is correct
17 Correct 359 ms 195448 KB Output is correct
18 Correct 353 ms 195448 KB Output is correct
19 Correct 377 ms 195456 KB Output is correct
20 Correct 342 ms 195448 KB Output is correct
21 Runtime error 300 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -