oj.uz

Submission #375311

# Submission time Handle Problem Language Result Execution time Memory
375311 2021-03-09T07:17:13 Z Mamnoon_Siam Swap (BOI16_swap) C++17
68 / 100
 923 ms 262148 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using ii = pair<int, int>;
using vi = vector<int>;
#define all(v) begin(v), end(v)
#define sz(v) (int)(v).size()
#define fi first
#define se second

const int N = 4e5 + 3;

map<int, vi> dp[N];
int a[N], n, nn;
vi todo[N];

vi merge(vi& p, vi& q, int x) {
  vi r; r.reserve(sz(p)+sz(q)+1);
  r.emplace_back(x);
  int pw = 1;
  int i = 0, j = 0;
  while(i < sz(p) or j < sz(q)) {
    r.insert(r.end(), p.begin()+i, p.begin()+min(sz(p), i+pw));
    r.insert(r.end(), q.begin()+j, q.begin()+min(sz(q), j+pw));
    i = min(i+pw, sz(p));
    j = min(j+pw, sz(q));
    pw *= 2;
  }
  return r;
}

int main(int argc, char* argv[]) {
  cin.sync_with_stdio(0); cin.tie(0);
  cin.exceptions(cin.failbit);
#ifdef LOCAL
  freopen("in", "r", stdin);
#endif
  cin >> n;
  nn = 1;
  while(nn-1 < n) nn *= 2;
  nn--;
  for(int i = 1; i <= n; ++i)
    cin >> a[i];
  for(int i = n+1; i <= nn; ++i)
    a[i] = n+1;
  for(int i:{1,2,3})
    if(i <= nn) todo[1].emplace_back(a[i]);
  for(int i = 2; i <= nn; ++i) {
    for(int j:{i,2*i,2*i+1})
      if(j <= nn) todo[i].emplace_back(a[j]);
    int u = i;
    while(u != 1) {
      if(u & 1)
        todo[i].emplace_back(a[u^1]);
      todo[i].emplace_back(a[u >>= 1]);
    }
  }
  for(int i = nn/2+1; i <= nn; ++i) {
    for(int x : todo[i])
      dp[i][x] = {x};
  }
  for(int u = nn/2; u >= 1; --u) {
    for(int k : todo[u]) {
      vi& ret = dp[u][k];
      { // don't use any edge
        vi& l = dp[2*u][a[2*u]];
        vi& r = dp[2*u+1][a[2*u+1]];
        ret = merge(l, r, k);
      }
      { // use only left edge
        vi& l = dp[2*u][k];
        vi& r = dp[2*u+1][a[2*u+1]];
        vi tmp = merge(l, r, a[2*u]);
        ret = min(ret, tmp);
      }
      { // use only right edge
        vi& l = dp[2*u][a[2*u]];
        vi& r = dp[2*u+1][k];
        vi tmp = merge(l, r, a[2*u+1]);
        ret = min(ret, tmp);
      }
      { // use both edges
        vi& l = dp[2*u][k];
        vi& r = dp[2*u+1][a[2*u]];
        vi tmp = merge(l, r, a[2*u+1]);
        ret = min(ret, tmp);
      }
    }
    dp[2*u].clear();
    dp[2*u+1].clear();
  }
  vi ans = dp[1][a[1]];
  for(int i = 0; i < n; ++i)
    cout << ans[i] << ' ';
  cout << endl;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28524 KB Output is correct
2 Correct 20 ms 28524 KB Output is correct
3 Correct 20 ms 28524 KB Output is correct
4 Correct 21 ms 28524 KB Output is correct
5 Correct 19 ms 28524 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28524 KB Output is correct
2 Correct 20 ms 28524 KB Output is correct
3 Correct 20 ms 28524 KB Output is correct
4 Correct 21 ms 28524 KB Output is correct
5 Correct 19 ms 28524 KB Output is correct
6 Correct 20 ms 28524 KB Output is correct
7 Correct 22 ms 28524 KB Output is correct
8 Correct 20 ms 28524 KB Output is correct
9 Correct 20 ms 28524 KB Output is correct
10 Correct 22 ms 28524 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28524 KB Output is correct
2 Correct 20 ms 28524 KB Output is correct
3 Correct 20 ms 28524 KB Output is correct
4 Correct 21 ms 28524 KB Output is correct
5 Correct 19 ms 28524 KB Output is correct
6 Correct 20 ms 28524 KB Output is correct
7 Correct 22 ms 28524 KB Output is correct
8 Correct 20 ms 28524 KB Output is correct
9 Correct 20 ms 28524 KB Output is correct
10 Correct 22 ms 28524 KB Output is correct
11 Correct 26 ms 29548 KB Output is correct
12 Correct 26 ms 29548 KB Output is correct
13 Correct 26 ms 29548 KB Output is correct
14 Correct 26 ms 29548 KB Output is correct
15 Correct 26 ms 29548 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28524 KB Output is correct
2 Correct 20 ms 28524 KB Output is correct
3 Correct 20 ms 28524 KB Output is correct
4 Correct 21 ms 28524 KB Output is correct
5 Correct 19 ms 28524 KB Output is correct
6 Correct 20 ms 28524 KB Output is correct
7 Correct 22 ms 28524 KB Output is correct
8 Correct 20 ms 28524 KB Output is correct
9 Correct 20 ms 28524 KB Output is correct
10 Correct 22 ms 28524 KB Output is correct
11 Correct 26 ms 29548 KB Output is correct
12 Correct 26 ms 29548 KB Output is correct
13 Correct 26 ms 29548 KB Output is correct
14 Correct 26 ms 29548 KB Output is correct
15 Correct 26 ms 29548 KB Output is correct
16 Correct 914 ms 121904 KB Output is correct
17 Correct 923 ms 122088 KB Output is correct
18 Correct 913 ms 121908 KB Output is correct
19 Correct 783 ms 121964 KB Output is correct
20 Correct 796 ms 121836 KB Output is correct

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28524 KB Output is correct
2 Correct 20 ms 28524 KB Output is correct
3 Correct 20 ms 28524 KB Output is correct
4 Correct 21 ms 28524 KB Output is correct
5 Correct 19 ms 28524 KB Output is correct
6 Correct 20 ms 28524 KB Output is correct
7 Correct 22 ms 28524 KB Output is correct
8 Correct 20 ms 28524 KB Output is correct
9 Correct 20 ms 28524 KB Output is correct
10 Correct 22 ms 28524 KB Output is correct
11 Correct 26 ms 29548 KB Output is correct
12 Correct 26 ms 29548 KB Output is correct
13 Correct 26 ms 29548 KB Output is correct
14 Correct 26 ms 29548 KB Output is correct
15 Correct 26 ms 29548 KB Output is correct
16 Correct 914 ms 121904 KB Output is correct
17 Correct 923 ms 122088 KB Output is correct
18 Correct 913 ms 121908 KB Output is correct
19 Correct 783 ms 121964 KB Output is correct
20 Correct 796 ms 121836 KB Output is correct
21 Runtime error 464 ms 262148 KB Execution killed with signal 9
22 Halted 0 ms 0 KB -