oj.uz

Submission #322237

# Submission time Handle Problem Language Result Execution time Memory
322237 2020-11-14T10:12:30 Z dolphingarlic Swap (BOI16_swap) C++14
68 / 100
 397 ms 262144 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; j < 2; j++) {
            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 101 ms 169484 KB Output is correct
2 Correct 100 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 101 ms 169452 KB Output is correct
5 Correct 101 ms 169452 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 169484 KB Output is correct
2 Correct 100 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 101 ms 169452 KB Output is correct
5 Correct 101 ms 169452 KB Output is correct
6 Correct 100 ms 169452 KB Output is correct
7 Correct 100 ms 169452 KB Output is correct
8 Correct 101 ms 169452 KB Output is correct
9 Correct 99 ms 169452 KB Output is correct
10 Correct 99 ms 169452 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 169484 KB Output is correct
2 Correct 100 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 101 ms 169452 KB Output is correct
5 Correct 101 ms 169452 KB Output is correct
6 Correct 100 ms 169452 KB Output is correct
7 Correct 100 ms 169452 KB Output is correct
8 Correct 101 ms 169452 KB Output is correct
9 Correct 99 ms 169452 KB Output is correct
10 Correct 99 ms 169452 KB Output is correct
11 Correct 104 ms 169708 KB Output is correct
12 Correct 105 ms 169708 KB Output is correct
13 Correct 104 ms 169804 KB Output is correct
14 Correct 104 ms 169772 KB Output is correct
15 Correct 104 ms 169728 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 169484 KB Output is correct
2 Correct 100 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 101 ms 169452 KB Output is correct
5 Correct 101 ms 169452 KB Output is correct
6 Correct 100 ms 169452 KB Output is correct
7 Correct 100 ms 169452 KB Output is correct
8 Correct 101 ms 169452 KB Output is correct
9 Correct 99 ms 169452 KB Output is correct
10 Correct 99 ms 169452 KB Output is correct
11 Correct 104 ms 169708 KB Output is correct
12 Correct 105 ms 169708 KB Output is correct
13 Correct 104 ms 169804 KB Output is correct
14 Correct 104 ms 169772 KB Output is correct
15 Correct 104 ms 169728 KB Output is correct
16 Correct 359 ms 193900 KB Output is correct
17 Correct 369 ms 193772 KB Output is correct
18 Correct 367 ms 193772 KB Output is correct
19 Correct 397 ms 193740 KB Output is correct
20 Correct 393 ms 193920 KB Output is correct

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 169484 KB Output is correct
2 Correct 100 ms 169452 KB Output is correct
3 Correct 102 ms 169452 KB Output is correct
4 Correct 101 ms 169452 KB Output is correct
5 Correct 101 ms 169452 KB Output is correct
6 Correct 100 ms 169452 KB Output is correct
7 Correct 100 ms 169452 KB Output is correct
8 Correct 101 ms 169452 KB Output is correct
9 Correct 99 ms 169452 KB Output is correct
10 Correct 99 ms 169452 KB Output is correct
11 Correct 104 ms 169708 KB Output is correct
12 Correct 105 ms 169708 KB Output is correct
13 Correct 104 ms 169804 KB Output is correct
14 Correct 104 ms 169772 KB Output is correct
15 Correct 104 ms 169728 KB Output is correct
16 Correct 359 ms 193900 KB Output is correct
17 Correct 369 ms 193772 KB Output is correct
18 Correct 367 ms 193772 KB Output is correct
19 Correct 397 ms 193740 KB Output is correct
20 Correct 393 ms 193920 KB Output is correct
21 Runtime error 290 ms 262144 KB Execution killed with signal 9 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -