#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define ff first
#define ss second
using namespace std ;
const int N=1e5;
int main ()
{
// find lis of all valid buildings and subtract it from the total buildings ,
// the left over buildings would be the buildings which would be changed
// or we can say we have to minimse the buildings which needs to be changed ,
// so why not maximise the buildings that do not need to be changed and subtract them
// from the total buildings
ll n , m ;
cin >> n >> m ;
ll arr[n+1];
bool is[n+1];
memset(is,true,sizeof(is));
for (int i=1;i<=n;i++)
{
cin >> arr[i];
if(arr[i]>i*m)
is[i]=false;
}
arr[0]=0;
vector<pair<int,int>>lis;
for (int i=1;i<=n;i++)
{
if(is[i])
{
if(lis.size()==0)
lis.pb({arr[i],i});
else
{
pair<int,int>temp=lis.back();
if(arr[i]-temp.ff<=(i-temp.ss)*m)
{
lis.pb({arr[i],i});
}
else
{
int l=0;
int r=lis.size()-1;
int ans=0;
while(l<=r)
{
int mid=(l+r)/2;
pair<int,int>temp=lis[mid];
if(arr[i]-temp.ff<=(i-temp.ss)*m)
{
ans=mid;
l=mid+1;
}
else
r=mid-1;
}
lis[ans+1]=make_pair(arr[i],i);
}
}
}
}
cout<<n-lis.size()<<"\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
296 KB |
Output is correct |
7 |
Correct |
0 ms |
292 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
288 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
296 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
296 KB |
Output is correct |
7 |
Correct |
0 ms |
292 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
288 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
204 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
296 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
292 KB |
Output is correct |
19 |
Correct |
1 ms |
296 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
332 KB |
Output is correct |
22 |
Correct |
2 ms |
332 KB |
Output is correct |
23 |
Correct |
2 ms |
332 KB |
Output is correct |
24 |
Correct |
2 ms |
460 KB |
Output is correct |
25 |
Correct |
2 ms |
432 KB |
Output is correct |
26 |
Correct |
2 ms |
460 KB |
Output is correct |
27 |
Correct |
2 ms |
348 KB |
Output is correct |
28 |
Correct |
2 ms |
348 KB |
Output is correct |
29 |
Correct |
1 ms |
428 KB |
Output is correct |
30 |
Correct |
2 ms |
332 KB |
Output is correct |
31 |
Correct |
1 ms |
332 KB |
Output is correct |
32 |
Correct |
2 ms |
332 KB |
Output is correct |
33 |
Correct |
2 ms |
308 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
292 KB |
Output is correct |
3 |
Correct |
1 ms |
296 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
2 ms |
332 KB |
Output is correct |
7 |
Correct |
2 ms |
332 KB |
Output is correct |
8 |
Correct |
2 ms |
460 KB |
Output is correct |
9 |
Correct |
2 ms |
432 KB |
Output is correct |
10 |
Correct |
2 ms |
460 KB |
Output is correct |
11 |
Correct |
2 ms |
348 KB |
Output is correct |
12 |
Correct |
2 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
428 KB |
Output is correct |
14 |
Correct |
2 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
2 ms |
332 KB |
Output is correct |
17 |
Correct |
2 ms |
308 KB |
Output is correct |
18 |
Correct |
1 ms |
204 KB |
Output is correct |
19 |
Correct |
0 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
0 ms |
204 KB |
Output is correct |
22 |
Correct |
1 ms |
204 KB |
Output is correct |
23 |
Correct |
1 ms |
296 KB |
Output is correct |
24 |
Correct |
0 ms |
292 KB |
Output is correct |
25 |
Correct |
1 ms |
204 KB |
Output is correct |
26 |
Correct |
0 ms |
288 KB |
Output is correct |
27 |
Correct |
1 ms |
204 KB |
Output is correct |
28 |
Correct |
1 ms |
204 KB |
Output is correct |
29 |
Correct |
1 ms |
204 KB |
Output is correct |
30 |
Correct |
1 ms |
204 KB |
Output is correct |
31 |
Correct |
1 ms |
204 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
296 KB |
Output is correct |
34 |
Correct |
3 ms |
300 KB |
Output is correct |
35 |
Correct |
3 ms |
308 KB |
Output is correct |
36 |
Correct |
2 ms |
376 KB |
Output is correct |
37 |
Correct |
2 ms |
356 KB |
Output is correct |
38 |
Correct |
2 ms |
332 KB |
Output is correct |
39 |
Correct |
3 ms |
460 KB |
Output is correct |
40 |
Correct |
2 ms |
332 KB |
Output is correct |
41 |
Correct |
2 ms |
304 KB |
Output is correct |
42 |
Correct |
2 ms |
332 KB |
Output is correct |
43 |
Correct |
2 ms |
332 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
300 KB |
Output is correct |
2 |
Correct |
3 ms |
308 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
356 KB |
Output is correct |
5 |
Correct |
2 ms |
332 KB |
Output is correct |
6 |
Correct |
3 ms |
460 KB |
Output is correct |
7 |
Correct |
2 ms |
332 KB |
Output is correct |
8 |
Correct |
2 ms |
304 KB |
Output is correct |
9 |
Correct |
2 ms |
332 KB |
Output is correct |
10 |
Correct |
2 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
292 KB |
Output is correct |
13 |
Correct |
1 ms |
296 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
2 ms |
332 KB |
Output is correct |
17 |
Correct |
2 ms |
332 KB |
Output is correct |
18 |
Correct |
2 ms |
460 KB |
Output is correct |
19 |
Correct |
2 ms |
432 KB |
Output is correct |
20 |
Correct |
2 ms |
460 KB |
Output is correct |
21 |
Correct |
2 ms |
348 KB |
Output is correct |
22 |
Correct |
2 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
428 KB |
Output is correct |
24 |
Correct |
2 ms |
332 KB |
Output is correct |
25 |
Correct |
1 ms |
332 KB |
Output is correct |
26 |
Correct |
2 ms |
332 KB |
Output is correct |
27 |
Correct |
2 ms |
308 KB |
Output is correct |
28 |
Correct |
1 ms |
204 KB |
Output is correct |
29 |
Correct |
0 ms |
204 KB |
Output is correct |
30 |
Correct |
0 ms |
204 KB |
Output is correct |
31 |
Correct |
0 ms |
204 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
1 ms |
296 KB |
Output is correct |
34 |
Correct |
0 ms |
292 KB |
Output is correct |
35 |
Correct |
1 ms |
204 KB |
Output is correct |
36 |
Correct |
0 ms |
288 KB |
Output is correct |
37 |
Correct |
1 ms |
204 KB |
Output is correct |
38 |
Correct |
1 ms |
204 KB |
Output is correct |
39 |
Correct |
1 ms |
204 KB |
Output is correct |
40 |
Correct |
1 ms |
204 KB |
Output is correct |
41 |
Correct |
1 ms |
204 KB |
Output is correct |
42 |
Correct |
1 ms |
204 KB |
Output is correct |
43 |
Correct |
0 ms |
296 KB |
Output is correct |
44 |
Correct |
33 ms |
4568 KB |
Output is correct |
45 |
Correct |
73 ms |
4088 KB |
Output is correct |
46 |
Correct |
86 ms |
3936 KB |
Output is correct |
47 |
Correct |
79 ms |
3932 KB |
Output is correct |
48 |
Correct |
53 ms |
5088 KB |
Output is correct |
49 |
Correct |
68 ms |
5328 KB |
Output is correct |
50 |
Correct |
85 ms |
5072 KB |
Output is correct |
51 |
Correct |
78 ms |
6328 KB |
Output is correct |
52 |
Correct |
49 ms |
4060 KB |
Output is correct |
53 |
Correct |
54 ms |
3284 KB |
Output is correct |
54 |
Correct |
57 ms |
5212 KB |
Output is correct |
55 |
Correct |
52 ms |
5276 KB |
Output is correct |