#include<bits/stdc++.h>
using namespace std;
#define int long long
#define fi first
#define se second
#define pb push_back
#define debug(x) cout<<#x<<": "<<x<<"\n"
signed main()
{
ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
// freopen("input.000","r",stdin);
// freopen("output.000","w",stdout);
// srand((unsigned)time(NULL));
// rand()
int n,i,a[200005],l[200005],r[200005],ans;
cin>>n;
for (i=1;i<n+1;i++) cin>>a[i];
l[1]=0;
for (i=2;i<n+1;i++) l[i]=max(0ll, a[i-1]-a[i]+1);
for (i=3;i<n+1;i++) l[i] += l[i-1];
r[n]=0;
for (i=n-1;i>0;i--) r[i]=max(0ll, a[i+1]-a[i]+1);
for (i=n-2;i>0;i--) r[i] += r[i+1];
ans=1e18;
for (i=1;i<n+1;i++) ans=min(ans,max(l[i],r[i]));
cout<<ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4948 KB |
Output is correct |
2 |
Correct |
2 ms |
5012 KB |
Output is correct |
3 |
Correct |
2 ms |
5012 KB |
Output is correct |
4 |
Correct |
2 ms |
4948 KB |
Output is correct |
5 |
Correct |
2 ms |
5024 KB |
Output is correct |
6 |
Correct |
2 ms |
5024 KB |
Output is correct |
7 |
Correct |
2 ms |
4948 KB |
Output is correct |
8 |
Correct |
3 ms |
5020 KB |
Output is correct |
9 |
Correct |
3 ms |
4948 KB |
Output is correct |
10 |
Correct |
3 ms |
4948 KB |
Output is correct |
11 |
Correct |
2 ms |
4948 KB |
Output is correct |
12 |
Correct |
4 ms |
5028 KB |
Output is correct |
13 |
Correct |
2 ms |
4948 KB |
Output is correct |
14 |
Correct |
3 ms |
4948 KB |
Output is correct |
15 |
Correct |
3 ms |
5020 KB |
Output is correct |
16 |
Correct |
3 ms |
5020 KB |
Output is correct |
17 |
Correct |
3 ms |
5020 KB |
Output is correct |
18 |
Correct |
4 ms |
5024 KB |
Output is correct |
19 |
Correct |
3 ms |
4948 KB |
Output is correct |
20 |
Correct |
3 ms |
5020 KB |
Output is correct |
21 |
Correct |
2 ms |
4948 KB |
Output is correct |
22 |
Correct |
2 ms |
4948 KB |
Output is correct |
23 |
Correct |
3 ms |
4948 KB |
Output is correct |
24 |
Correct |
3 ms |
4948 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4948 KB |
Output is correct |
2 |
Correct |
2 ms |
5012 KB |
Output is correct |
3 |
Correct |
2 ms |
5012 KB |
Output is correct |
4 |
Correct |
2 ms |
4948 KB |
Output is correct |
5 |
Correct |
2 ms |
5024 KB |
Output is correct |
6 |
Correct |
2 ms |
5024 KB |
Output is correct |
7 |
Correct |
2 ms |
4948 KB |
Output is correct |
8 |
Correct |
3 ms |
5020 KB |
Output is correct |
9 |
Correct |
3 ms |
4948 KB |
Output is correct |
10 |
Correct |
3 ms |
4948 KB |
Output is correct |
11 |
Correct |
2 ms |
4948 KB |
Output is correct |
12 |
Correct |
4 ms |
5028 KB |
Output is correct |
13 |
Correct |
2 ms |
4948 KB |
Output is correct |
14 |
Correct |
3 ms |
4948 KB |
Output is correct |
15 |
Correct |
3 ms |
5020 KB |
Output is correct |
16 |
Correct |
3 ms |
5020 KB |
Output is correct |
17 |
Correct |
3 ms |
5020 KB |
Output is correct |
18 |
Correct |
4 ms |
5024 KB |
Output is correct |
19 |
Correct |
3 ms |
4948 KB |
Output is correct |
20 |
Correct |
3 ms |
5020 KB |
Output is correct |
21 |
Correct |
2 ms |
4948 KB |
Output is correct |
22 |
Correct |
2 ms |
4948 KB |
Output is correct |
23 |
Correct |
3 ms |
4948 KB |
Output is correct |
24 |
Correct |
3 ms |
4948 KB |
Output is correct |
25 |
Correct |
3 ms |
4948 KB |
Output is correct |
26 |
Correct |
23 ms |
6896 KB |
Output is correct |
27 |
Correct |
24 ms |
6896 KB |
Output is correct |
28 |
Correct |
25 ms |
6896 KB |
Output is correct |
29 |
Correct |
25 ms |
6912 KB |
Output is correct |
30 |
Correct |
23 ms |
6348 KB |
Output is correct |
31 |
Correct |
23 ms |
6908 KB |
Output is correct |
32 |
Correct |
22 ms |
6908 KB |
Output is correct |
33 |
Correct |
22 ms |
6896 KB |
Output is correct |
34 |
Correct |
22 ms |
6908 KB |
Output is correct |
35 |
Correct |
19 ms |
6044 KB |
Output is correct |
36 |
Correct |
19 ms |
6264 KB |
Output is correct |
37 |
Correct |
18 ms |
6272 KB |
Output is correct |
38 |
Correct |
22 ms |
6916 KB |
Output is correct |
39 |
Correct |
21 ms |
6904 KB |
Output is correct |
40 |
Correct |
23 ms |
6900 KB |
Output is correct |
41 |
Correct |
23 ms |
6900 KB |
Output is correct |
42 |
Correct |
21 ms |
6644 KB |
Output is correct |
43 |
Correct |
27 ms |
6908 KB |
Output is correct |
44 |
Correct |
24 ms |
6776 KB |
Output is correct |
45 |
Correct |
21 ms |
6896 KB |
Output is correct |
46 |
Correct |
21 ms |
6948 KB |
Output is correct |
47 |
Correct |
23 ms |
6896 KB |
Output is correct |
48 |
Correct |
24 ms |
6860 KB |
Output is correct |