#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
ll n;
cin>>n;
ll a[n+5];
for(ll i=1;i<=n;i++){
cin>>a[i];
}
ll pre[n+5],suf[n+5];
pre[1]=0;
suf[n]=0;
for(ll i=2;i<=n;i++){
pre[i]=pre[i-1];
if(a[i-1]>=a[i]){
pre[i]+=a[i-1]-a[i]+1;
}
}
for(ll i=n-1;i>=1;i--){
suf[i]=suf[i+1];
if(a[i+1]>=a[i]){
suf[i]+=a[i+1]-a[i]+1;
}
}
ll ans=1e18;
for(ll i=1;i<=n;i++){
ans=min(ans,max(pre[i],suf[i]));
}
cout<<ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
344 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
344 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
344 KB |
Output is correct |
25 |
Correct |
1 ms |
556 KB |
Output is correct |
26 |
Correct |
20 ms |
5092 KB |
Output is correct |
27 |
Correct |
19 ms |
7004 KB |
Output is correct |
28 |
Correct |
24 ms |
7012 KB |
Output is correct |
29 |
Correct |
20 ms |
6976 KB |
Output is correct |
30 |
Correct |
18 ms |
6364 KB |
Output is correct |
31 |
Correct |
21 ms |
6992 KB |
Output is correct |
32 |
Correct |
21 ms |
6996 KB |
Output is correct |
33 |
Correct |
23 ms |
6864 KB |
Output is correct |
34 |
Correct |
19 ms |
6908 KB |
Output is correct |
35 |
Correct |
16 ms |
6236 KB |
Output is correct |
36 |
Correct |
15 ms |
6244 KB |
Output is correct |
37 |
Correct |
18 ms |
6356 KB |
Output is correct |
38 |
Correct |
19 ms |
6988 KB |
Output is correct |
39 |
Correct |
18 ms |
6996 KB |
Output is correct |
40 |
Correct |
19 ms |
6860 KB |
Output is correct |
41 |
Correct |
28 ms |
6988 KB |
Output is correct |
42 |
Correct |
19 ms |
6744 KB |
Output is correct |
43 |
Correct |
30 ms |
6988 KB |
Output is correct |
44 |
Correct |
20 ms |
6984 KB |
Output is correct |
45 |
Correct |
19 ms |
6984 KB |
Output is correct |
46 |
Correct |
20 ms |
7256 KB |
Output is correct |
47 |
Correct |
19 ms |
6864 KB |
Output is correct |
48 |
Correct |
19 ms |
6864 KB |
Output is correct |