oj.uz

Submission #375313

# Submission time Handle Problem Language Result Execution time Memory
375313 2021-03-09T07:20:10 Z Mamnoon_Siam Swap (BOI16_swap) C++17
48 / 100
 1000 ms 122064 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);
      }
    }
    for(int v:{2*u,2*u+1}) {
      for(auto pa : dp[v]) pa.second.clear();
      dp[v].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 19 ms 28524 KB Output is correct
2 Correct 22 ms 28524 KB Output is correct
3 Correct 22 ms 28524 KB Output is correct
4 Correct 22 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 19 ms 28524 KB Output is correct
2 Correct 22 ms 28524 KB Output is correct
3 Correct 22 ms 28524 KB Output is correct
4 Correct 22 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 20 ms 28524 KB Output is correct
8 Correct 20 ms 28524 KB Output is correct
9 Correct 22 ms 28524 KB Output is correct
10 Correct 20 ms 28524 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 28524 KB Output is correct
2 Correct 22 ms 28524 KB Output is correct
3 Correct 22 ms 28524 KB Output is correct
4 Correct 22 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 20 ms 28524 KB Output is correct
8 Correct 20 ms 28524 KB Output is correct
9 Correct 22 ms 28524 KB Output is correct
10 Correct 20 ms 28524 KB Output is correct
11 Correct 27 ms 29548 KB Output is correct
12 Correct 27 ms 29548 KB Output is correct
13 Correct 27 ms 29548 KB Output is correct
14 Correct 28 ms 29548 KB Output is correct
15 Correct 29 ms 29548 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 28524 KB Output is correct
2 Correct 22 ms 28524 KB Output is correct
3 Correct 22 ms 28524 KB Output is correct
4 Correct 22 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 20 ms 28524 KB Output is correct
8 Correct 20 ms 28524 KB Output is correct
9 Correct 22 ms 28524 KB Output is correct
10 Correct 20 ms 28524 KB Output is correct
11 Correct 27 ms 29548 KB Output is correct
12 Correct 27 ms 29548 KB Output is correct
13 Correct 27 ms 29548 KB Output is correct
14 Correct 28 ms 29548 KB Output is correct
15 Correct 29 ms 29548 KB Output is correct
16 Execution timed out 1033 ms 122064 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 28524 KB Output is correct
2 Correct 22 ms 28524 KB Output is correct
3 Correct 22 ms 28524 KB Output is correct
4 Correct 22 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 20 ms 28524 KB Output is correct
8 Correct 20 ms 28524 KB Output is correct
9 Correct 22 ms 28524 KB Output is correct
10 Correct 20 ms 28524 KB Output is correct
11 Correct 27 ms 29548 KB Output is correct
12 Correct 27 ms 29548 KB Output is correct
13 Correct 27 ms 29548 KB Output is correct
14 Correct 28 ms 29548 KB Output is correct
15 Correct 29 ms 29548 KB Output is correct
16 Execution timed out 1033 ms 122064 KB Time limit exceeded
17 Halted 0 ms 0 KB -