#include <bits/stdc++.h>
using namespace std;
int n, a[200005];
long long pref[200005], suff[200005], sol;
int main()
{
int i;
cin >> n;
for (i = 1; i <= n; i++)
cin >> a[i];
pref[1] = 0;
for (i = 2; i <= n; i++)
if (a[i] <= a[i - 1])
pref[i] = pref[i - 1] + a[i - 1] - a[i] + 1;
else
pref[i] = pref[i - 1];
suff[n] = 0;
for (i = n - 1; i >= 1; i--)
if (a[i] <= a[i + 1])
suff[i] = suff[i + 1] + a[i + 1] - a[i] + 1;
else
suff[i] = suff[i + 1];
sol = max(suff[1], pref[1]);
for (i = 2; i <= n; i++)
sol = min(sol, max(pref[i] , suff[i]));
cout << sol;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
296 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
304 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
2 ms |
340 KB |
Output is correct |
7 |
Correct |
2 ms |
316 KB |
Output is correct |
8 |
Correct |
2 ms |
320 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
2 ms |
320 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
2 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
2 ms |
336 KB |
Output is correct |
19 |
Correct |
2 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
320 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
2 ms |
340 KB |
Output is correct |
23 |
Correct |
2 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
296 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
304 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
2 ms |
340 KB |
Output is correct |
7 |
Correct |
2 ms |
316 KB |
Output is correct |
8 |
Correct |
2 ms |
320 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
2 ms |
320 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
2 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
2 ms |
336 KB |
Output is correct |
19 |
Correct |
2 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
320 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
2 ms |
340 KB |
Output is correct |
23 |
Correct |
2 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
2 ms |
332 KB |
Output is correct |
26 |
Correct |
79 ms |
6176 KB |
Output is correct |
27 |
Correct |
81 ms |
6068 KB |
Output is correct |
28 |
Correct |
81 ms |
6080 KB |
Output is correct |
29 |
Correct |
80 ms |
6156 KB |
Output is correct |
30 |
Correct |
56 ms |
5388 KB |
Output is correct |
31 |
Correct |
78 ms |
6076 KB |
Output is correct |
32 |
Correct |
80 ms |
6252 KB |
Output is correct |
33 |
Correct |
80 ms |
6160 KB |
Output is correct |
34 |
Correct |
82 ms |
6092 KB |
Output is correct |
35 |
Correct |
52 ms |
5284 KB |
Output is correct |
36 |
Correct |
55 ms |
5408 KB |
Output is correct |
37 |
Correct |
56 ms |
5412 KB |
Output is correct |
38 |
Correct |
76 ms |
6132 KB |
Output is correct |
39 |
Correct |
78 ms |
6056 KB |
Output is correct |
40 |
Correct |
82 ms |
6068 KB |
Output is correct |
41 |
Correct |
77 ms |
6092 KB |
Output is correct |
42 |
Correct |
73 ms |
5936 KB |
Output is correct |
43 |
Correct |
78 ms |
6100 KB |
Output is correct |
44 |
Correct |
79 ms |
6012 KB |
Output is correct |
45 |
Correct |
78 ms |
6024 KB |
Output is correct |
46 |
Correct |
80 ms |
6148 KB |
Output is correct |
47 |
Correct |
76 ms |
6052 KB |
Output is correct |
48 |
Correct |
80 ms |
6096 KB |
Output is correct |