#include <bits/stdc++.h>
using namespace std;
#define int long long
int n,k,a[200005], dp[200005], key[200005], tree[800020];
vector<int> b;
void update(int pos, int val, int id=1, int l=1, int r=n)
{
if (pos < l or r < pos) return;
if (l==r)
{
tree[id]=val;
return;
}
int mid=(l+r)/2;
update(pos,val,id*2,l,mid);
update(pos,val,id*2+1,mid+1,r);
tree[id]=min(tree[id*2],tree[id*2+1]);
}
int get(int u, int v , int id=1, int l=1, int r=n)
{
if (r < u or v < l) return 1e18;
if (u <= l and r <= v) return tree[id];
int mid=(l+r)/2;
return min(get(u,v,id*2,l,mid),get(u,v,id*2+1,mid+1,r));
}
signed main()
{
fill(tree,tree+800010,1e18);
cin>>n>>k;
n+=2;
for (int i = 2; i < n; i++) cin>>a[i];
for (int i = 1; i <= n; i++)
{
key[i]=a[i]-i*k;
b.push_back(key[i]);
}
sort(b.begin(),b.end());
for (int i = 1; i <= n; i++) key[i]=lower_bound(b.begin(),b.end(),key[i]) - b.begin() + 1;
dp[n]=0;
update(key[n],0+n-1);
for (int i = n-1; i > 0; i--)
{
// for (int i = 1; i <= 4*n; i++) cout<<tree[i]<<' ';cout<<endl;
int cur=get(1,key[i]);
dp[i]=cur-i;
update(key[i],dp[i]+i-1);
// cout<<cur<<' '<<dp[i]<<endl;
}
cout<<dp[1];
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 2 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 3 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 4 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 5 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 6 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 7 |
Correct |
2 ms |
10840 KB |
Output is correct |
| 8 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 9 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 10 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 11 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 12 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 13 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 14 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 15 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 16 |
Correct |
2 ms |
10880 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 2 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 3 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 4 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 5 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 6 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 7 |
Correct |
2 ms |
10840 KB |
Output is correct |
| 8 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 9 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 10 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 11 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 12 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 13 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 14 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 15 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 16 |
Correct |
2 ms |
10880 KB |
Output is correct |
| 17 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 18 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 19 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 20 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 21 |
Correct |
4 ms |
11096 KB |
Output is correct |
| 22 |
Correct |
5 ms |
10840 KB |
Output is correct |
| 23 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 24 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 25 |
Correct |
5 ms |
11008 KB |
Output is correct |
| 26 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 27 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 28 |
Correct |
6 ms |
10844 KB |
Output is correct |
| 29 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 30 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 31 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 32 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 33 |
Correct |
4 ms |
10844 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 2 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 3 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 4 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 5 |
Correct |
4 ms |
11096 KB |
Output is correct |
| 6 |
Correct |
5 ms |
10840 KB |
Output is correct |
| 7 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 8 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 9 |
Correct |
5 ms |
11008 KB |
Output is correct |
| 10 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 11 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 12 |
Correct |
6 ms |
10844 KB |
Output is correct |
| 13 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 14 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 15 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 16 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 17 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 18 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 19 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 20 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 21 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 22 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 23 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 24 |
Correct |
2 ms |
10840 KB |
Output is correct |
| 25 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 26 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 27 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 28 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 29 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 30 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 31 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 32 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 33 |
Correct |
2 ms |
10880 KB |
Output is correct |
| 34 |
Correct |
7 ms |
10844 KB |
Output is correct |
| 35 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 36 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 37 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 38 |
Correct |
4 ms |
10924 KB |
Output is correct |
| 39 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 40 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 41 |
Correct |
4 ms |
10856 KB |
Output is correct |
| 42 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 43 |
Correct |
4 ms |
10844 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
10844 KB |
Output is correct |
| 2 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 3 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 4 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 5 |
Correct |
4 ms |
10924 KB |
Output is correct |
| 6 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 7 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 8 |
Correct |
4 ms |
10856 KB |
Output is correct |
| 9 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 10 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 11 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 12 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 13 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 14 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 15 |
Correct |
4 ms |
11096 KB |
Output is correct |
| 16 |
Correct |
5 ms |
10840 KB |
Output is correct |
| 17 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 18 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 19 |
Correct |
5 ms |
11008 KB |
Output is correct |
| 20 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 21 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 22 |
Correct |
6 ms |
10844 KB |
Output is correct |
| 23 |
Correct |
4 ms |
10840 KB |
Output is correct |
| 24 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 25 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 26 |
Correct |
5 ms |
10844 KB |
Output is correct |
| 27 |
Correct |
4 ms |
10844 KB |
Output is correct |
| 28 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 29 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 30 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 31 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 32 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 33 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 34 |
Correct |
2 ms |
10840 KB |
Output is correct |
| 35 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 36 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 37 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 38 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 39 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 40 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 41 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 42 |
Correct |
2 ms |
10844 KB |
Output is correct |
| 43 |
Correct |
2 ms |
10880 KB |
Output is correct |
| 44 |
Correct |
83 ms |
13780 KB |
Output is correct |
| 45 |
Correct |
164 ms |
15328 KB |
Output is correct |
| 46 |
Correct |
162 ms |
15556 KB |
Output is correct |
| 47 |
Correct |
160 ms |
15280 KB |
Output is correct |
| 48 |
Correct |
104 ms |
14296 KB |
Output is correct |
| 49 |
Correct |
100 ms |
14536 KB |
Output is correct |
| 50 |
Correct |
105 ms |
15308 KB |
Output is correct |
| 51 |
Correct |
116 ms |
15356 KB |
Output is correct |
| 52 |
Correct |
84 ms |
14280 KB |
Output is correct |
| 53 |
Correct |
87 ms |
14788 KB |
Output is correct |
| 54 |
Correct |
102 ms |
14420 KB |
Output is correct |
| 55 |
Correct |
98 ms |
14532 KB |
Output is correct |
