#include <iostream>
using namespace std;
const int Nmax=2e5+5;
int aint[4*Nmax];
int a[Nmax];
int pos[Nmax];
int n;
int sol=0;
void build(int nod,int l,int r)
{
if(l==r)
{
aint[nod]=a[l];
return;
}
int mid=(l+r)/2;
build(2*nod,l,mid);
build(2*nod+1,mid+1,r);
aint[nod]=max(aint[2*nod],aint[2*nod+1]);
return;
}
int query(int nod,int l,int r,int st,int dr)
{
if(st<=l && r<=dr) return aint[nod];
int mid=(l+r)/2;
if(dr<=mid) return query(2*nod,l,mid,st,dr);
if(mid<st) return query(2*nod+1,mid+1,r,st,dr);
return max(query(2*nod,l,mid,st,mid),query(2*nod+1,mid+1,r,mid+1,dr));
}
int solve(int l,int r,int poz)
{
int op1=0,op2=0;
///in stanga
if(poz>l)
{
int newr=poz-1;
int pozst=pos[query(1,1,n,l,newr)];
op1=poz-pozst;
op1+=solve(l,newr,pozst);
}
///in dreapta
if(poz<r)
{
int newl=poz+1;
int pozdr=pos[query(1,1,n,newl,r)];
op2=pozdr-poz;
op2+=solve(newl,r,pozdr);
}
return max(op1,op2);
}
int main()
{
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a[i];
pos[a[i]]=i;
}
build(1,1,n);
int pozi=pos[query(1,1,n,1,n)];
cout<<solve(1,n,pozi)<<'\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
2 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
2 ms |
2396 KB |
Output is correct |
9 |
Correct |
2 ms |
2488 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
2 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
2 ms |
2396 KB |
Output is correct |
9 |
Correct |
2 ms |
2488 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2392 KB |
Output is correct |
12 |
Correct |
1 ms |
2492 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
2 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
2 ms |
2396 KB |
Output is correct |
9 |
Correct |
2 ms |
2488 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2392 KB |
Output is correct |
12 |
Correct |
1 ms |
2492 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
2 ms |
2648 KB |
Output is correct |
19 |
Correct |
3 ms |
2652 KB |
Output is correct |
20 |
Correct |
3 ms |
2652 KB |
Output is correct |
21 |
Correct |
2 ms |
2392 KB |
Output is correct |
22 |
Correct |
2 ms |
2396 KB |
Output is correct |
23 |
Correct |
2 ms |
2392 KB |
Output is correct |
24 |
Correct |
2 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
2 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
2 ms |
2396 KB |
Output is correct |
9 |
Correct |
2 ms |
2488 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2392 KB |
Output is correct |
12 |
Correct |
1 ms |
2492 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
2 ms |
2648 KB |
Output is correct |
19 |
Correct |
3 ms |
2652 KB |
Output is correct |
20 |
Correct |
3 ms |
2652 KB |
Output is correct |
21 |
Correct |
2 ms |
2392 KB |
Output is correct |
22 |
Correct |
2 ms |
2396 KB |
Output is correct |
23 |
Correct |
2 ms |
2392 KB |
Output is correct |
24 |
Correct |
2 ms |
2396 KB |
Output is correct |
25 |
Correct |
1 ms |
2396 KB |
Output is correct |
26 |
Incorrect |
2 ms |
2396 KB |
Output isn't correct |
27 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
2 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
2 ms |
2396 KB |
Output is correct |
9 |
Correct |
2 ms |
2488 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2392 KB |
Output is correct |
12 |
Correct |
1 ms |
2492 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
2 ms |
2648 KB |
Output is correct |
19 |
Correct |
3 ms |
2652 KB |
Output is correct |
20 |
Correct |
3 ms |
2652 KB |
Output is correct |
21 |
Correct |
2 ms |
2392 KB |
Output is correct |
22 |
Correct |
2 ms |
2396 KB |
Output is correct |
23 |
Correct |
2 ms |
2392 KB |
Output is correct |
24 |
Correct |
2 ms |
2396 KB |
Output is correct |
25 |
Incorrect |
75 ms |
15444 KB |
Output isn't correct |
26 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Incorrect |
1 ms |
2488 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
2 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2392 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
2 ms |
2396 KB |
Output is correct |
9 |
Correct |
2 ms |
2488 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2392 KB |
Output is correct |
12 |
Correct |
1 ms |
2492 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
2 ms |
2648 KB |
Output is correct |
19 |
Correct |
3 ms |
2652 KB |
Output is correct |
20 |
Correct |
3 ms |
2652 KB |
Output is correct |
21 |
Correct |
2 ms |
2392 KB |
Output is correct |
22 |
Correct |
2 ms |
2396 KB |
Output is correct |
23 |
Correct |
2 ms |
2392 KB |
Output is correct |
24 |
Correct |
2 ms |
2396 KB |
Output is correct |
25 |
Correct |
1 ms |
2396 KB |
Output is correct |
26 |
Incorrect |
2 ms |
2396 KB |
Output isn't correct |
27 |
Halted |
0 ms |
0 KB |
- |