#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(), x.end()
#define ar array
#define pb push_back
#define ln '\n'
#define int long long
using i64 = long long;
template <class F, class _S>
bool chmin(F &u, const _S &v){
bool flag = false;
if ( u > v ){
u = v; flag |= true;
}
return flag;
}
template <class F, class _S>
bool chmax(F &u, const _S &v){
bool flag = false;
if ( u < v ){
u = v; flag |= true;
}
return flag;
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n; cin >> n;
vector <int> d(n - 1);
int lst = -1;
for ( int i = 0; i < n; i++ ){
int x; cin >> x;
if ( lst != -1 ){
d[i - 1] = x - lst;
} lst = x;
}
vector <int> pf(n), sf(n);
for ( int i = 0; i + 1 < n; i++ ){
pf[i + 1] = pf[i] + min(0LL, d[i] - 1);
}
for ( int i = n - 2; i >= 0; i-- ){
sf[i] = sf[i + 1] + max(0LL, d[i] + 1);
}
int opt = 1e18;
for ( int i = 0; i < n; i++ ){
chmin(opt, max(sf[i], -pf[i]));
}
cout << opt;
cout << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
496 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
464 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
344 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
344 KB |
Output is correct |
24 |
Correct |
1 ms |
344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
496 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
464 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
344 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
344 KB |
Output is correct |
24 |
Correct |
1 ms |
344 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
18 ms |
6992 KB |
Output is correct |
27 |
Correct |
18 ms |
6864 KB |
Output is correct |
28 |
Correct |
18 ms |
6884 KB |
Output is correct |
29 |
Correct |
19 ms |
7004 KB |
Output is correct |
30 |
Correct |
17 ms |
6244 KB |
Output is correct |
31 |
Correct |
19 ms |
6996 KB |
Output is correct |
32 |
Correct |
18 ms |
7040 KB |
Output is correct |
33 |
Correct |
18 ms |
7040 KB |
Output is correct |
34 |
Correct |
25 ms |
6992 KB |
Output is correct |
35 |
Correct |
15 ms |
6236 KB |
Output is correct |
36 |
Correct |
14 ms |
6232 KB |
Output is correct |
37 |
Correct |
16 ms |
6236 KB |
Output is correct |
38 |
Correct |
23 ms |
7188 KB |
Output is correct |
39 |
Correct |
19 ms |
6880 KB |
Output is correct |
40 |
Correct |
18 ms |
6992 KB |
Output is correct |
41 |
Correct |
18 ms |
7036 KB |
Output is correct |
42 |
Correct |
19 ms |
6744 KB |
Output is correct |
43 |
Correct |
18 ms |
6992 KB |
Output is correct |
44 |
Correct |
23 ms |
7008 KB |
Output is correct |
45 |
Correct |
20 ms |
7008 KB |
Output is correct |
46 |
Correct |
18 ms |
7000 KB |
Output is correct |
47 |
Correct |
23 ms |
7004 KB |
Output is correct |
48 |
Correct |
20 ms |
7000 KB |
Output is correct |