#include<bits/stdc++.h>
#define F first
#define S second
#define MAX 500005
#define oo 1e18
#define mod 1000000007
#define fast_in ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);cout.setf(ios::fixed);cout.precision(0);
using namespace std;
typedef long long ll;
#define pll pair<ll , ll>
#define vll vector<ll>
#define vvll vector<vll>
#define vpll vector<pll>
ll n,t[MAX],a[MAX],b[MAX];
int main(){
cin>>n;
for(int i=0;i<n;i++)cin>>a[i];
t[n-1]=0;
for(int i=n-2;i>=0;i--){
t[i]=t[i+1]+max((ll)0,(a[i+1]+1)-a[i]);
}ll s=0;ll ans=oo;
for(int i=0;i<n;i++){
if(i>0)s+=max((ll)0,(a[i-1]+1)-a[i]);
ans=min(ans,max(s,t[i]));
}cout<<ans<<"\n";
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4540 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 4 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 12 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4560 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 19 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 20 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 21 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 22 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 23 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 24 |
Correct |
2 ms |
4700 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4540 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 4 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 12 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4560 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 19 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 20 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 21 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 22 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 23 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 24 |
Correct |
2 ms |
4700 KB |
Output is correct |
| 25 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 26 |
Correct |
55 ms |
10548 KB |
Output is correct |
| 27 |
Correct |
55 ms |
10320 KB |
Output is correct |
| 28 |
Correct |
55 ms |
10392 KB |
Output is correct |
| 29 |
Correct |
55 ms |
10576 KB |
Output is correct |
| 30 |
Correct |
41 ms |
9812 KB |
Output is correct |
| 31 |
Correct |
62 ms |
10388 KB |
Output is correct |
| 32 |
Correct |
55 ms |
10576 KB |
Output is correct |
| 33 |
Correct |
55 ms |
10576 KB |
Output is correct |
| 34 |
Correct |
55 ms |
10564 KB |
Output is correct |
| 35 |
Correct |
39 ms |
9768 KB |
Output is correct |
| 36 |
Correct |
41 ms |
9812 KB |
Output is correct |
| 37 |
Correct |
41 ms |
9636 KB |
Output is correct |
| 38 |
Correct |
54 ms |
10536 KB |
Output is correct |
| 39 |
Correct |
55 ms |
10580 KB |
Output is correct |
| 40 |
Correct |
56 ms |
10568 KB |
Output is correct |
| 41 |
Correct |
55 ms |
10320 KB |
Output is correct |
| 42 |
Correct |
51 ms |
10392 KB |
Output is correct |
| 43 |
Correct |
55 ms |
10540 KB |
Output is correct |
| 44 |
Correct |
55 ms |
10536 KB |
Output is correct |
| 45 |
Correct |
56 ms |
10324 KB |
Output is correct |
| 46 |
Correct |
55 ms |
10576 KB |
Output is correct |
| 47 |
Correct |
56 ms |
10580 KB |
Output is correct |
| 48 |
Correct |
55 ms |
10412 KB |
Output is correct |
