oj.uz

Submission #322234

# Submission time Handle Problem Language Result Execution time Memory
322234 2020-11-14T10:08:01 Z dolphingarlic Swap (BOI16_swap) C++14
68 / 100
 408 ms 262148 KB 
#include <bits/stdc++.h>
using namespace std;

int a[200002];
vector<int> dp[200002][18][2], tmp;

void merge(vector<int> &ret, vector<int> &l, vector<int> &r) {
    for (int i = 0, j = 1; i < l.size(); i += j, j <<= 1) {
        for (int k = i; k < i + j && k < l.size(); k++) ret.push_back(l[k]);
        for (int k = i; k < i + j && k < r.size(); k++) ret.push_back(r[k]);
    }
}

int main() {
    int n;
    scanf("%d", &n);
    for (int i = 1; i <= n; i++) scanf("%d", a + i);

    for (int node = n; node; node--) {
        for (int i = 0; node >> i; i++) for (int j : {0, 1}) {
            if (!(((node >> i + 1) << 1) + j)) continue;
            int val = a[((node >> i + 1) << 1) + j];

            if (node * 2 > n) dp[node][i][j] = {val};
            else if (node * 2 + 1 > n) {
                if (val < a[2 * node]) dp[node][i][j] = {val, a[2 * node]};
                else dp[node][i][j] = {a[2 * node], val};
            } else {
                int mn = min({val, a[2 * node], a[2 * node + 1]});
                if (mn == val) {
                    dp[node][i][j] = {val};
                    merge(dp[node][i][j], dp[2 * node][0][0], dp[2 * node + 1][0][1]);
                } else if (mn == a[2 * node]) {
                    dp[node][i][j] = {a[2 * node]};
                    merge(dp[node][i][j], dp[2 * node][i + 1][j], dp[2 * node + 1][0][1]);
                } else {
                    dp[node][i][j] = tmp = {a[2 * node + 1]};
                    merge(dp[node][i][j], dp[2 * node][0][0], dp[2 * node + 1][i + 1][j]);
                    merge(tmp, dp[2 * node][i + 1][j], dp[2 * node + 1][0][0]);
                    dp[node][i][j] = min(dp[node][i][j], tmp);
                }

                vector<int>().swap(dp[2 * node][i + 1][j]);
                vector<int>().swap(dp[2 * node + 1][i + 1][j]);
            }
        }

        if (node * 2 <= n) {
            vector<int>().swap(dp[node * 2][0][0]);
            vector<int>().swap(dp[node * 2][0][1]);
            vector<int>().swap(dp[node * 2 + 1][0][0]);
            vector<int>().swap(dp[node * 2 + 1][0][1]);
        }
    }

    for (int i : dp[1][0][1]) printf("%d ", i);
    return 0;
}

Compilation message

swap.cpp: In function 'void merge(std::vector<int>&, std::vector<int>&, std::vector<int>&)':
swap.cpp:8:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i = 0, j = 1; i < l.size(); i += j, j <<= 1) {
      |                            ~~^~~~~~~~~~
swap.cpp:9:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |         for (int k = i; k < i + j && k < l.size(); k++) ret.push_back(l[k]);
      |                                      ~~^~~~~~~~~~
swap.cpp:10:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |         for (int k = i; k < i + j && k < r.size(); k++) ret.push_back(r[k]);
      |                                      ~~^~~~~~~~~~
swap.cpp: In function 'int main()':
swap.cpp:21:31: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   21 |             if (!(((node >> i + 1) << 1) + j)) continue;
      |                             ~~^~~
swap.cpp:22:37: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   22 |             int val = a[((node >> i + 1) << 1) + j];
      |                                   ~~^~~
swap.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
swap.cpp:17:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   17 |     for (int i = 1; i <= n; i++) scanf("%d", a + i);
      |                                  ~~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 169452 KB Output is correct
2 Correct 104 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 100 ms 169452 KB Output is correct
5 Correct 100 ms 169372 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 169452 KB Output is correct
2 Correct 104 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 100 ms 169452 KB Output is correct
5 Correct 100 ms 169372 KB Output is correct
6 Correct 101 ms 169452 KB Output is correct
7 Correct 102 ms 169452 KB Output is correct
8 Correct 102 ms 169452 KB Output is correct
9 Correct 108 ms 169452 KB Output is correct
10 Correct 103 ms 169452 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 169452 KB Output is correct
2 Correct 104 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 100 ms 169452 KB Output is correct
5 Correct 100 ms 169372 KB Output is correct
6 Correct 101 ms 169452 KB Output is correct
7 Correct 102 ms 169452 KB Output is correct
8 Correct 102 ms 169452 KB Output is correct
9 Correct 108 ms 169452 KB Output is correct
10 Correct 103 ms 169452 KB Output is correct
11 Correct 103 ms 169708 KB Output is correct
12 Correct 106 ms 169708 KB Output is correct
13 Correct 107 ms 169708 KB Output is correct
14 Correct 109 ms 169708 KB Output is correct
15 Correct 105 ms 169708 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 169452 KB Output is correct
2 Correct 104 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 100 ms 169452 KB Output is correct
5 Correct 100 ms 169372 KB Output is correct
6 Correct 101 ms 169452 KB Output is correct
7 Correct 102 ms 169452 KB Output is correct
8 Correct 102 ms 169452 KB Output is correct
9 Correct 108 ms 169452 KB Output is correct
10 Correct 103 ms 169452 KB Output is correct
11 Correct 103 ms 169708 KB Output is correct
12 Correct 106 ms 169708 KB Output is correct
13 Correct 107 ms 169708 KB Output is correct
14 Correct 109 ms 169708 KB Output is correct
15 Correct 105 ms 169708 KB Output is correct
16 Correct 362 ms 193788 KB Output is correct
17 Correct 363 ms 193820 KB Output is correct
18 Correct 369 ms 193772 KB Output is correct
19 Correct 406 ms 193900 KB Output is correct
20 Correct 408 ms 193888 KB Output is correct

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 169452 KB Output is correct
2 Correct 104 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 100 ms 169452 KB Output is correct
5 Correct 100 ms 169372 KB Output is correct
6 Correct 101 ms 169452 KB Output is correct
7 Correct 102 ms 169452 KB Output is correct
8 Correct 102 ms 169452 KB Output is correct
9 Correct 108 ms 169452 KB Output is correct
10 Correct 103 ms 169452 KB Output is correct
11 Correct 103 ms 169708 KB Output is correct
12 Correct 106 ms 169708 KB Output is correct
13 Correct 107 ms 169708 KB Output is correct
14 Correct 109 ms 169708 KB Output is correct
15 Correct 105 ms 169708 KB Output is correct
16 Correct 362 ms 193788 KB Output is correct
17 Correct 363 ms 193820 KB Output is correct
18 Correct 369 ms 193772 KB Output is correct
19 Correct 406 ms 193900 KB Output is correct
20 Correct 408 ms 193888 KB Output is correct
21 Runtime error 299 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -