#include<bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pb push_back
using namespace std;
ll n,k,a[200005],ans,dp[2000005];
struct node {
ll mn;
node *l,*r;
node() : mn(n), l(NULL), r(NULL) {}
};
node *root = NULL;
void upd(node *&t, ll l, ll r, ll x, ll y) {
if(t == NULL)t = new node();
if(l == r){
t -> mn = min(t -> mn , y);
return;
}
ll m = (l + r) / 2;
if(x <= m)upd(t->l, l, m, x, y);
else upd(t->r, m + 1, r, x, y);
t->mn = min((t -> l ? t -> l -> mn : n) , (t -> r ? t -> r -> mn : n));
}
ll cnt(node *t,ll l,ll r,ll x,ll y) {
if(t){
if(l >= x && r <= y)
return t -> mn;
if(l > y || r < x)return n;
ll m = (l + r) / 2;
ll k1,k2;
k1 = cnt(t->l,l,m,x,y);
k2 = cnt(t->r,m + 1,r,x,y);
if(k2 < k1)k1 = k2;
return k1;
}
return n;
}
int main(){
ios::sync_with_stdio(false);
cin >> n >> k;
for(int i=1; i<=n; i++)
cin >> a[i];
upd(root , 1 , 3000000000 , 1000000000 , 0);
dp[0] = 0;
for(int i=1; i<=n; i++){
ll g = a[i] - i * k + 1000000000;
ll get = cnt(root , 1 , 3000000000 , g , 3000000000);
dp[i] = get + i - 1;
upd(root , 1 , 3000000000 , g , dp[i] - i);
}
ans = n;
for(int i=n; i>=0; i--)
ans = min(ans , dp[i] + n - i);
cout << ans << '\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
504 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
420 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
380 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
6 ms |
760 KB |
Output is correct |
5 |
Correct |
7 ms |
1324 KB |
Output is correct |
6 |
Correct |
7 ms |
760 KB |
Output is correct |
7 |
Correct |
9 ms |
2424 KB |
Output is correct |
8 |
Correct |
9 ms |
2680 KB |
Output is correct |
9 |
Correct |
7 ms |
1400 KB |
Output is correct |
10 |
Correct |
9 ms |
2168 KB |
Output is correct |
11 |
Correct |
5 ms |
376 KB |
Output is correct |
12 |
Correct |
6 ms |
504 KB |
Output is correct |
13 |
Correct |
7 ms |
1272 KB |
Output is correct |
14 |
Correct |
8 ms |
1400 KB |
Output is correct |
15 |
Correct |
6 ms |
632 KB |
Output is correct |
16 |
Correct |
9 ms |
2296 KB |
Output is correct |
17 |
Correct |
9 ms |
2168 KB |
Output is correct |
18 |
Correct |
2 ms |
504 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
376 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
376 KB |
Output is correct |
25 |
Correct |
2 ms |
376 KB |
Output is correct |
26 |
Correct |
2 ms |
420 KB |
Output is correct |
27 |
Correct |
2 ms |
376 KB |
Output is correct |
28 |
Correct |
2 ms |
376 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
11 ms |
3448 KB |
Output is correct |
2 |
Correct |
13 ms |
3448 KB |
Output is correct |
3 |
Correct |
12 ms |
3448 KB |
Output is correct |
4 |
Correct |
9 ms |
2040 KB |
Output is correct |
5 |
Correct |
6 ms |
504 KB |
Output is correct |
6 |
Correct |
6 ms |
504 KB |
Output is correct |
7 |
Correct |
6 ms |
632 KB |
Output is correct |
8 |
Correct |
5 ms |
504 KB |
Output is correct |
9 |
Correct |
9 ms |
2424 KB |
Output is correct |
10 |
Correct |
9 ms |
2552 KB |
Output is correct |
11 |
Correct |
2 ms |
380 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
6 ms |
760 KB |
Output is correct |
15 |
Correct |
7 ms |
1324 KB |
Output is correct |
16 |
Correct |
7 ms |
760 KB |
Output is correct |
17 |
Correct |
9 ms |
2424 KB |
Output is correct |
18 |
Correct |
9 ms |
2680 KB |
Output is correct |
19 |
Correct |
7 ms |
1400 KB |
Output is correct |
20 |
Correct |
9 ms |
2168 KB |
Output is correct |
21 |
Correct |
5 ms |
376 KB |
Output is correct |
22 |
Correct |
6 ms |
504 KB |
Output is correct |
23 |
Correct |
7 ms |
1272 KB |
Output is correct |
24 |
Correct |
8 ms |
1400 KB |
Output is correct |
25 |
Correct |
6 ms |
632 KB |
Output is correct |
26 |
Correct |
9 ms |
2296 KB |
Output is correct |
27 |
Correct |
9 ms |
2168 KB |
Output is correct |
28 |
Correct |
2 ms |
504 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
2 ms |
376 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
420 KB |
Output is correct |
37 |
Correct |
2 ms |
376 KB |
Output is correct |
38 |
Correct |
2 ms |
376 KB |
Output is correct |
39 |
Correct |
2 ms |
376 KB |
Output is correct |
40 |
Correct |
2 ms |
376 KB |
Output is correct |
41 |
Correct |
2 ms |
376 KB |
Output is correct |
42 |
Correct |
2 ms |
376 KB |
Output is correct |
43 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
11 ms |
3448 KB |
Output is correct |
2 |
Correct |
13 ms |
3448 KB |
Output is correct |
3 |
Correct |
12 ms |
3448 KB |
Output is correct |
4 |
Correct |
9 ms |
2040 KB |
Output is correct |
5 |
Correct |
6 ms |
504 KB |
Output is correct |
6 |
Correct |
6 ms |
504 KB |
Output is correct |
7 |
Correct |
6 ms |
632 KB |
Output is correct |
8 |
Correct |
5 ms |
504 KB |
Output is correct |
9 |
Correct |
9 ms |
2424 KB |
Output is correct |
10 |
Correct |
9 ms |
2552 KB |
Output is correct |
11 |
Correct |
2 ms |
380 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
6 ms |
760 KB |
Output is correct |
15 |
Correct |
7 ms |
1324 KB |
Output is correct |
16 |
Correct |
7 ms |
760 KB |
Output is correct |
17 |
Correct |
9 ms |
2424 KB |
Output is correct |
18 |
Correct |
9 ms |
2680 KB |
Output is correct |
19 |
Correct |
7 ms |
1400 KB |
Output is correct |
20 |
Correct |
9 ms |
2168 KB |
Output is correct |
21 |
Correct |
5 ms |
376 KB |
Output is correct |
22 |
Correct |
6 ms |
504 KB |
Output is correct |
23 |
Correct |
7 ms |
1272 KB |
Output is correct |
24 |
Correct |
8 ms |
1400 KB |
Output is correct |
25 |
Correct |
6 ms |
632 KB |
Output is correct |
26 |
Correct |
9 ms |
2296 KB |
Output is correct |
27 |
Correct |
9 ms |
2168 KB |
Output is correct |
28 |
Correct |
210 ms |
37520 KB |
Output is correct |
29 |
Correct |
420 ms |
90000 KB |
Output is correct |
30 |
Correct |
418 ms |
94332 KB |
Output is correct |
31 |
Correct |
423 ms |
94492 KB |
Output is correct |
32 |
Correct |
224 ms |
39800 KB |
Output is correct |
33 |
Correct |
268 ms |
68088 KB |
Output is correct |
34 |
Correct |
150 ms |
5496 KB |
Output is correct |
35 |
Correct |
151 ms |
5496 KB |
Output is correct |
36 |
Correct |
159 ms |
10616 KB |
Output is correct |
37 |
Correct |
137 ms |
4848 KB |
Output is correct |
38 |
Correct |
292 ms |
81116 KB |
Output is correct |
39 |
Correct |
291 ms |
80732 KB |
Output is correct |
40 |
Correct |
2 ms |
504 KB |
Output is correct |
41 |
Correct |
2 ms |
376 KB |
Output is correct |
42 |
Correct |
2 ms |
376 KB |
Output is correct |
43 |
Correct |
2 ms |
376 KB |
Output is correct |
44 |
Correct |
2 ms |
376 KB |
Output is correct |
45 |
Correct |
2 ms |
376 KB |
Output is correct |
46 |
Correct |
2 ms |
376 KB |
Output is correct |
47 |
Correct |
2 ms |
376 KB |
Output is correct |
48 |
Correct |
2 ms |
420 KB |
Output is correct |
49 |
Correct |
2 ms |
376 KB |
Output is correct |
50 |
Correct |
2 ms |
376 KB |
Output is correct |
51 |
Correct |
2 ms |
376 KB |
Output is correct |
52 |
Correct |
2 ms |
376 KB |
Output is correct |
53 |
Correct |
2 ms |
376 KB |
Output is correct |
54 |
Correct |
2 ms |
376 KB |
Output is correct |
55 |
Correct |
2 ms |
376 KB |
Output is correct |