oj.uz

Submission #387459

# Submission time Handle Problem Language Result Execution time Memory
387459 2021-04-08T12:40:23 Z uacoder123 Group Photo (JOI21_ho_t3) C++14
100 / 100
 818 ms 232556 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) lli(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
typedef int lli;
typedef pair <lli,lli> ii;
typedef pair <ii,lli> iii;
typedef vector <lli> vi;
typedef tree<lli,null_type,less<lli>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
int n;
int h[5001],dp[5001][5001],p[5001],ans[5001];
int dp1[5001][5001],dp2[5001][5001];
int main()
{

      ios_base::sync_with_stdio(false);
      cin.tie(NULL);
  cin>>n;
  for(int i=0;i<n;++i)
  {
    cin>>h[i];
    h[i]--;
    p[h[i]]=i;
  }
  for(int i=0;i<n;++i)
  {
    int v=0,v1=0;
    for(int j=i-1;j>=0;--j)
    {
      if(p[j]<p[i])
      {
        v=1;
        v1=0;
      }
      else
      {
        v1=1;
        v=0;
      }
      dp2[i][j]=dp2[i][j+1]+v1;
      dp1[i][j]=dp1[i][j+1]+v;
    }
    for(int j=i+1;j<n;++j)
    {
      if(p[j]<p[i])
        v=1;
      else
        v=0;
      dp1[i][j]=dp1[i][j-1]+v;
    }
  }
  for(int i=0;i<n;++i)
  {
    dp[i][i]=0;
    for(int j=i+1;j<n;++j)
      dp[i][j]=dp[i][j-1]+dp1[j][i];
  }
  for(int i=0;i<n;++i)
  {
    int v1=0,v2;
  int ans1=n*n;
    for(int j=i;j>=0;--j)
    {
      v1-=dp1[j][i];
      v1+=dp2[j][0];
      if(j-1==-1)
        v2=0;
      else
        v2=ans[j-1];
      ans1=min(ans1,v1+dp[j][i]+v2);
    }
    ans[i]=ans1;
  }
  cout<<ans[n-1]<<endl;
  return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 376 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 376 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 620 KB Output is correct
12 Correct 1 ms 640 KB Output is correct
13 Correct 1 ms 620 KB Output is correct
14 Correct 1 ms 620 KB Output is correct
15 Correct 2 ms 620 KB Output is correct
16 Correct 1 ms 620 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 620 KB Output is correct
19 Correct 1 ms 620 KB Output is correct
20 Correct 2 ms 620 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 376 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 620 KB Output is correct
12 Correct 1 ms 640 KB Output is correct
13 Correct 1 ms 620 KB Output is correct
14 Correct 1 ms 620 KB Output is correct
15 Correct 2 ms 620 KB Output is correct
16 Correct 1 ms 620 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 620 KB Output is correct
19 Correct 1 ms 620 KB Output is correct
20 Correct 2 ms 620 KB Output is correct
21 Correct 4 ms 3052 KB Output is correct
22 Correct 3 ms 3052 KB Output is correct
23 Correct 3 ms 3052 KB Output is correct
24 Correct 3 ms 3052 KB Output is correct
25 Correct 3 ms 3052 KB Output is correct
26 Correct 3 ms 3052 KB Output is correct
27 Correct 3 ms 3052 KB Output is correct
28 Correct 3 ms 3052 KB Output is correct
29 Correct 3 ms 3052 KB Output is correct
30 Correct 3 ms 3052 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 376 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 620 KB Output is correct
12 Correct 1 ms 640 KB Output is correct
13 Correct 1 ms 620 KB Output is correct
14 Correct 1 ms 620 KB Output is correct
15 Correct 2 ms 620 KB Output is correct
16 Correct 1 ms 620 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 620 KB Output is correct
19 Correct 1 ms 620 KB Output is correct
20 Correct 2 ms 620 KB Output is correct
21 Correct 4 ms 3052 KB Output is correct
22 Correct 3 ms 3052 KB Output is correct
23 Correct 3 ms 3052 KB Output is correct
24 Correct 3 ms 3052 KB Output is correct
25 Correct 3 ms 3052 KB Output is correct
26 Correct 3 ms 3052 KB Output is correct
27 Correct 3 ms 3052 KB Output is correct
28 Correct 3 ms 3052 KB Output is correct
29 Correct 3 ms 3052 KB Output is correct
30 Correct 3 ms 3052 KB Output is correct
31 Correct 21 ms 14956 KB Output is correct
32 Correct 20 ms 15084 KB Output is correct
33 Correct 21 ms 15084 KB Output is correct
34 Correct 23 ms 15084 KB Output is correct
35 Correct 21 ms 15112 KB Output is correct
36 Correct 21 ms 15084 KB Output is correct
37 Correct 21 ms 15084 KB Output is correct
38 Correct 21 ms 15084 KB Output is correct
39 Correct 23 ms 15084 KB Output is correct
40 Correct 22 ms 15084 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 376 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 620 KB Output is correct
12 Correct 1 ms 640 KB Output is correct
13 Correct 1 ms 620 KB Output is correct
14 Correct 1 ms 620 KB Output is correct
15 Correct 2 ms 620 KB Output is correct
16 Correct 1 ms 620 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 620 KB Output is correct
19 Correct 1 ms 620 KB Output is correct
20 Correct 2 ms 620 KB Output is correct
21 Correct 4 ms 3052 KB Output is correct
22 Correct 3 ms 3052 KB Output is correct
23 Correct 3 ms 3052 KB Output is correct
24 Correct 3 ms 3052 KB Output is correct
25 Correct 3 ms 3052 KB Output is correct
26 Correct 3 ms 3052 KB Output is correct
27 Correct 3 ms 3052 KB Output is correct
28 Correct 3 ms 3052 KB Output is correct
29 Correct 3 ms 3052 KB Output is correct
30 Correct 3 ms 3052 KB Output is correct
31 Correct 21 ms 14956 KB Output is correct
32 Correct 20 ms 15084 KB Output is correct
33 Correct 21 ms 15084 KB Output is correct
34 Correct 23 ms 15084 KB Output is correct
35 Correct 21 ms 15112 KB Output is correct
36 Correct 21 ms 15084 KB Output is correct
37 Correct 21 ms 15084 KB Output is correct
38 Correct 21 ms 15084 KB Output is correct
39 Correct 23 ms 15084 KB Output is correct
40 Correct 22 ms 15084 KB Output is correct
41 Correct 807 ms 231976 KB Output is correct
42 Correct 808 ms 232044 KB Output is correct
43 Correct 817 ms 232172 KB Output is correct
44 Correct 812 ms 232300 KB Output is correct
45 Correct 816 ms 232172 KB Output is correct
46 Correct 813 ms 232300 KB Output is correct
47 Correct 816 ms 232172 KB Output is correct
48 Correct 816 ms 232300 KB Output is correct
49 Correct 810 ms 232556 KB Output is correct
50 Correct 807 ms 232300 KB Output is correct
51 Correct 809 ms 232300 KB Output is correct
52 Correct 818 ms 232300 KB Output is correct
53 Correct 817 ms 232428 KB Output is correct
54 Correct 816 ms 232300 KB Output is correct
55 Correct 813 ms 232172 KB Output is correct