#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
#define f first
#define s second
#define pb push_back
#define ep emplace
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define uniquev(v) sort(all(v)), (v).resize(unique(all(v)) - (v).begin())
#define mem(f,x) memset(f , x , sizeof(f))
#define sz(x) (int)(x).size()
#define __lcm(a, b) (1ll * ((a) / __gcd((a), (b))) * (b))
#define mxx *max_element
#define mnn *min_element
#define cntbit(x) __builtin_popcountll(x)
#define len(x) (int)(x.length())
const int N = 5e5 + 100;
int a[N], f[N];
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n;
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i];
f[i] = a[i] - a[i - 1];
}
ll l = 0, r = 0;
for (int i = 2; i <= n; i++) {
if (f[i] >= 0) {
r += f[i] + 1;
}
}
ll ans = r;
for (int i = 2; i <= n; i++) {
if (f[i] >= 0) {
r -= (f[i] + 1);
}
if (f[i] <= 0) {
l += (abs(f[i]) + 1);
}
ans = min(ans, l + r - min(l, r));
}
cout << ans << '\n';
return 0;
}
// a[l] += 1
// a[r + 1] -=
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
1 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 |
2 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2540 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2392 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 |
2560 KB |
Output is correct |
| 20 |
Correct |
2 ms |
2528 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2540 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2552 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
1 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 |
2 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2540 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2392 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 |
2560 KB |
Output is correct |
| 20 |
Correct |
2 ms |
2528 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2540 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2552 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 26 |
Correct |
20 ms |
5124 KB |
Output is correct |
| 27 |
Correct |
23 ms |
5052 KB |
Output is correct |
| 28 |
Correct |
21 ms |
4896 KB |
Output is correct |
| 29 |
Correct |
20 ms |
5068 KB |
Output is correct |
| 30 |
Correct |
20 ms |
4448 KB |
Output is correct |
| 31 |
Correct |
17 ms |
4992 KB |
Output is correct |
| 32 |
Correct |
16 ms |
4952 KB |
Output is correct |
| 33 |
Correct |
19 ms |
5012 KB |
Output is correct |
| 34 |
Correct |
21 ms |
4956 KB |
Output is correct |
| 35 |
Correct |
15 ms |
4188 KB |
Output is correct |
| 36 |
Correct |
16 ms |
4452 KB |
Output is correct |
| 37 |
Correct |
20 ms |
4372 KB |
Output is correct |
| 38 |
Correct |
25 ms |
5080 KB |
Output is correct |
| 39 |
Correct |
20 ms |
5036 KB |
Output is correct |
| 40 |
Correct |
16 ms |
4952 KB |
Output is correct |
| 41 |
Correct |
17 ms |
4880 KB |
Output is correct |
| 42 |
Correct |
18 ms |
4956 KB |
Output is correct |
| 43 |
Correct |
16 ms |
4952 KB |
Output is correct |
| 44 |
Correct |
19 ms |
5044 KB |
Output is correct |
| 45 |
Correct |
16 ms |
4956 KB |
Output is correct |
| 46 |
Correct |
16 ms |
5100 KB |
Output is correct |
| 47 |
Correct |
25 ms |
4948 KB |
Output is correct |
| 48 |
Correct |
17 ms |
5032 KB |
Output is correct |
