#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
const int N = 2e5 + 5;
const long long inf = 1e18;
int n;
int a[N], d[N];
long long pf[N], sf[N];
int main() {
ios::sync_with_stdio(false); cin.tie(nullptr);
cin >> n;
for (int i = 1; i <= n; ++i) {
cin >> a[i];
}
for (int i = 1; i < n; ++i) {
d[i] = a[i] - a[i + 1];
}
for (int i = 1; i < n; ++i) {
pf[i] = pf[i - 1] + max(0, d[i] + 1);
}
for (int i = n - 1; i >= 1; --i) {
sf[i] = sf[i + 1] + max(0, -d[i] + 1);
}
long long res = inf;
for (int i = 1; i <= n; ++i) {
res = min(res, max(pf[i - 1], sf[i]));
}
cout << res;
return 0;
}
| # |
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 |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2520 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2524 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 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 |
2540 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2532 KB |
Output is correct |
| 19 |
Correct |
0 ms |
2520 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2536 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2524 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 |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2520 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2524 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 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 |
2540 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2532 KB |
Output is correct |
| 19 |
Correct |
0 ms |
2520 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2536 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2524 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 26 |
Correct |
20 ms |
6900 KB |
Output is correct |
| 27 |
Correct |
20 ms |
7004 KB |
Output is correct |
| 28 |
Correct |
17 ms |
6984 KB |
Output is correct |
| 29 |
Correct |
15 ms |
7004 KB |
Output is correct |
| 30 |
Correct |
12 ms |
6160 KB |
Output is correct |
| 31 |
Correct |
16 ms |
6992 KB |
Output is correct |
| 32 |
Correct |
15 ms |
7004 KB |
Output is correct |
| 33 |
Correct |
16 ms |
7000 KB |
Output is correct |
| 34 |
Correct |
15 ms |
6920 KB |
Output is correct |
| 35 |
Correct |
12 ms |
6236 KB |
Output is correct |
| 36 |
Correct |
16 ms |
6232 KB |
Output is correct |
| 37 |
Correct |
16 ms |
6236 KB |
Output is correct |
| 38 |
Correct |
16 ms |
7004 KB |
Output is correct |
| 39 |
Correct |
16 ms |
6996 KB |
Output is correct |
| 40 |
Correct |
22 ms |
7004 KB |
Output is correct |
| 41 |
Correct |
15 ms |
7004 KB |
Output is correct |
| 42 |
Correct |
14 ms |
6744 KB |
Output is correct |
| 43 |
Correct |
15 ms |
7004 KB |
Output is correct |
| 44 |
Correct |
15 ms |
6924 KB |
Output is correct |
| 45 |
Correct |
15 ms |
7000 KB |
Output is correct |
| 46 |
Correct |
19 ms |
7004 KB |
Output is correct |
| 47 |
Correct |
15 ms |
7004 KB |
Output is correct |
| 48 |
Correct |
15 ms |
7008 KB |
Output is correct |
