#include <bits/stdc++.h>
using namespace std;
#define inf 0x3F3F3F3F3F3F3F3F
#define int long long
const int MXN = 2e5 + 5;
int n;
int a[MXN];
int p[MXN], s[MXN];
signed main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> n;
for (int i = 1; i <= n; i++) cin >> a[i];
a[0] = -inf, a[n + 1] = -inf;
for (int i = 1; i <= n; i++) p[i] = p[i - 1] + max(0LL, a[i - 1] + 1 - a[i]);
for (int i = n; i >= 1; i--) s[i] = s[i + 1] + max(0LL, a[i + 1] + 1 - a[i]);
int res = inf;
for (int i = 1; i <= n; i++) res = min(res, max(p[i - 1], s[i + 1]) + max(0LL, max(a[i - 1], a[i + 1]) + 1 - a[i]));
cout << res << '\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 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 |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
0 ms |
2520 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 |
1 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2468 KB |
Output is correct |
| 23 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 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 |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
0 ms |
2520 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 |
1 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2468 KB |
Output is correct |
| 23 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
14 ms |
5796 KB |
Output is correct |
| 27 |
Correct |
14 ms |
7004 KB |
Output is correct |
| 28 |
Correct |
14 ms |
6896 KB |
Output is correct |
| 29 |
Correct |
16 ms |
6996 KB |
Output is correct |
| 30 |
Correct |
12 ms |
6236 KB |
Output is correct |
| 31 |
Correct |
14 ms |
6976 KB |
Output is correct |
| 32 |
Correct |
14 ms |
6936 KB |
Output is correct |
| 33 |
Correct |
14 ms |
7256 KB |
Output is correct |
| 34 |
Correct |
13 ms |
6980 KB |
Output is correct |
| 35 |
Correct |
11 ms |
6304 KB |
Output is correct |
| 36 |
Correct |
11 ms |
6236 KB |
Output is correct |
| 37 |
Correct |
11 ms |
6408 KB |
Output is correct |
| 38 |
Correct |
14 ms |
7000 KB |
Output is correct |
| 39 |
Correct |
14 ms |
7084 KB |
Output is correct |
| 40 |
Correct |
15 ms |
6996 KB |
Output is correct |
| 41 |
Correct |
13 ms |
7004 KB |
Output is correct |
| 42 |
Correct |
12 ms |
6744 KB |
Output is correct |
| 43 |
Correct |
14 ms |
6996 KB |
Output is correct |
| 44 |
Correct |
15 ms |
6980 KB |
Output is correct |
| 45 |
Correct |
15 ms |
7044 KB |
Output is correct |
| 46 |
Correct |
17 ms |
6984 KB |
Output is correct |
| 47 |
Correct |
15 ms |
7000 KB |
Output is correct |
| 48 |
Correct |
15 ms |
6996 KB |
Output is correct |
