/*input
8
12 2 34 85 4 91 29 85
*/
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update> indexed_set;
//order_of_key #of elements less than x
// find_by_order kth element
using ll=long long;
using ld=long double;
using pii=pair<int,int>;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()),c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
const ll INF64=1e18+1;
const int INF=0x3f3f3f3f;
const int MOD=1e9+9;
const ld PI=acos(-1);
const ld eps=1e-3;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
inline ll mult(ll a,ll b){
if(a>=MOD) a%=MOD;
if(b>=MOD) b%=MOD;
return (a*b)%MOD;
}
inline ll mypow(ll a,ll b){
if(b<=0) return 1;
ll res=1LL;
while(b){
if(b&1) res=mult(res,a);
a=mult(a,a);
b>>=1;
}
return res;
}
const int maxn=2e5+5;
const int maxlg=__lg(maxn)+2;
ll pref[maxn],suff[maxn];
int32_t main(){
ios::sync_with_stdio(false),cin.tie(0);
int n;
cin>>n;
int pv;
cin>>pv;
vector<int> v;
REP(i,n-1){
int x;
cin>>x;
v.pb(x-pv);
pv=x;
}
REP1(i,n-1) pref[i]=pref[i-1]+max(-v[i-1]+1,0);
for(int i=n-1;i>=1;i--) suff[i]=suff[i+1]+max(v[i-1]+1,0);
ll ans=INF64;
REP(i,n){
MNTO(ans,max(pref[i],suff[i+1]));
}
cout<<ans<<'\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
332 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
1 ms |
332 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
332 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
332 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
332 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
1 ms |
332 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
332 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
332 KB |
Output is correct |
25 |
Correct |
1 ms |
332 KB |
Output is correct |
26 |
Correct |
29 ms |
6248 KB |
Output is correct |
27 |
Correct |
31 ms |
6208 KB |
Output is correct |
28 |
Correct |
33 ms |
6300 KB |
Output is correct |
29 |
Correct |
30 ms |
6252 KB |
Output is correct |
30 |
Correct |
27 ms |
5564 KB |
Output is correct |
31 |
Correct |
29 ms |
6332 KB |
Output is correct |
32 |
Correct |
31 ms |
6208 KB |
Output is correct |
33 |
Correct |
29 ms |
6228 KB |
Output is correct |
34 |
Correct |
29 ms |
6208 KB |
Output is correct |
35 |
Correct |
28 ms |
5436 KB |
Output is correct |
36 |
Correct |
24 ms |
5532 KB |
Output is correct |
37 |
Correct |
24 ms |
5676 KB |
Output is correct |
38 |
Correct |
30 ms |
6284 KB |
Output is correct |
39 |
Correct |
32 ms |
6300 KB |
Output is correct |
40 |
Correct |
30 ms |
6304 KB |
Output is correct |
41 |
Correct |
29 ms |
6216 KB |
Output is correct |
42 |
Correct |
27 ms |
6024 KB |
Output is correct |
43 |
Correct |
28 ms |
6308 KB |
Output is correct |
44 |
Correct |
29 ms |
6176 KB |
Output is correct |
45 |
Correct |
29 ms |
6248 KB |
Output is correct |
46 |
Correct |
28 ms |
6212 KB |
Output is correct |
47 |
Correct |
29 ms |
6204 KB |
Output is correct |
48 |
Correct |
35 ms |
6252 KB |
Output is correct |