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Submission #447844

# Submission time Handle Problem Language Result Execution time Memory
447844 2021-07-27T17:40:05 Z SirCovidThe19th Swap (BOI16_swap) C++14
100 / 100
 317 ms 28552 KB 
#include <bits/stdc++.h>
using namespace std; 

int n, A[200005]; map<pair<int, int>, int> swp;

int dp(int i, int j){ int l = i*2, r = i*2+1, ret = i; 
    if (swp.count({i, j})) return swp[{i, j}]; 
    else if (l > n){}
    else if (r > n) ret = (A[l] < j) ? l : i;   
    else if (A[l] < min(j, A[r])) ret = dp(l, j); 
    else if (A[r] < min(j, A[l])){
        int mn = min(j, A[l]);
        if (dp(l, mn) < dp(r, mn)) ret = ((mn == j) ? dp(l, j) : dp(r, j));
        else ret = ((mn == j) ? dp(r, j) : dp(l, j));
    }return swp[{i, j}] = ret;
}

int main(){
    cin >> n; for (int i = 1; i <= n; i++) cin >> A[i];
    for (int i = 1; i <= n; i++){ int l = i*2, r = i*2+1;
        if (l > n){ continue; } 
        else if (r > n){ if (A[l] < A[i]) swap(A[l], A[i]); }
        else if (A[l] < min(A[i], A[r])) swap(A[l], A[i]);
        else if (A[r] < min(A[i], A[l])){
            int mn = min(A[i], A[l]), mx = max(A[i], A[l]); 
            A[i] = A[r];
            if (dp(l, mn) < dp(r, mn)) tie(A[l], A[r]) = {mn, mx};
            else tie(A[l], A[r]) = {mx, mn};
        }
    }for (int i = 1; i <= n; i++) cout<<A[i]<<" ";
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 36 ms 3248 KB Output is correct
17 Correct 38 ms 3508 KB Output is correct
18 Correct 37 ms 3316 KB Output is correct
19 Correct 75 ms 7196 KB Output is correct
20 Correct 91 ms 7164 KB Output is correct

Subtask #5
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 36 ms 3248 KB Output is correct
17 Correct 38 ms 3508 KB Output is correct
18 Correct 37 ms 3316 KB Output is correct
19 Correct 75 ms 7196 KB Output is correct
20 Correct 91 ms 7164 KB Output is correct
21 Correct 152 ms 12996 KB Output is correct
22 Correct 158 ms 12964 KB Output is correct
23 Correct 190 ms 12868 KB Output is correct
24 Correct 317 ms 28432 KB Output is correct
25 Correct 315 ms 28552 KB Output is correct