#include <bits/stdc++.h>
using namespace std;
int N;
int arr[200005];
/*
int mnpre[200005];
long long sumpre[200005];
int mnsuf[200005];
long long sumsuf[200005];
*/
long long mxpre[200005];
long long mxsuf[200005];
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> N;
for(int i = 1; i <= N; i++){
cin >> arr[i];
}
/*
for(int i = 1; i <= N; i++){
mnpre[i] = max(arr[i], mnpre[i-1] + 1);
sumpre[i] = sumpre[i-1] + mnpre[i] - arr[i];
}
for(int i = N; i; i--){
mnsuf[i] = max(arr[i], mnsuf[i+1] + 1);
sumsuf[i] = sumsuf[i+1] + mnsuf[i] - arr[i];
}
long long ans = LLONG_MAX/2;
for(int i = 1; i <= N; i++){
int lft = mnpre[i-1];
int rht = mnsuf[i+1];
long long tot = sumpre[i-1] + sumsuf[i+1];
tot += max({lft, rht, arr[i]}) - arr[i];
ans = min(ans, tot);
}
cout << ans;
*/
for(int i = 1; i <= N; i++){
mxpre[i] = max(0, arr[i-1] + 1 - arr[i]);
mxpre[i] += mxpre[i-1];
}
for(int i = N; i; i--){
mxsuf[i] = max(0, arr[i+1] + 1 - arr[i]);
mxsuf[i] += mxsuf[i+1];
}
long long ans = LLONG_MAX;
for(int i = 1; i <= N; i++){
ans = min(ans, max(mxsuf[i], mxpre[i]));
}
cout << ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 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 |
336 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 |
336 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 |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 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 |
336 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 |
336 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 |
6048 KB |
Output is correct |
| 27 |
Correct |
28 ms |
6124 KB |
Output is correct |
| 28 |
Correct |
26 ms |
6140 KB |
Output is correct |
| 29 |
Correct |
27 ms |
6148 KB |
Output is correct |
| 30 |
Correct |
27 ms |
5384 KB |
Output is correct |
| 31 |
Correct |
26 ms |
6040 KB |
Output is correct |
| 32 |
Correct |
27 ms |
6048 KB |
Output is correct |
| 33 |
Correct |
27 ms |
6132 KB |
Output is correct |
| 34 |
Correct |
26 ms |
6088 KB |
Output is correct |
| 35 |
Correct |
21 ms |
5316 KB |
Output is correct |
| 36 |
Correct |
27 ms |
5388 KB |
Output is correct |
| 37 |
Correct |
23 ms |
5444 KB |
Output is correct |
| 38 |
Correct |
27 ms |
6068 KB |
Output is correct |
| 39 |
Correct |
29 ms |
6064 KB |
Output is correct |
| 40 |
Correct |
28 ms |
6148 KB |
Output is correct |
| 41 |
Correct |
28 ms |
6084 KB |
Output is correct |
| 42 |
Correct |
25 ms |
5892 KB |
Output is correct |
| 43 |
Correct |
26 ms |
6076 KB |
Output is correct |
| 44 |
Correct |
26 ms |
6076 KB |
Output is correct |
| 45 |
Correct |
30 ms |
6020 KB |
Output is correct |
| 46 |
Correct |
26 ms |
6088 KB |
Output is correct |
| 47 |
Correct |
25 ms |
6092 KB |
Output is correct |
| 48 |
Correct |
27 ms |
6100 KB |
Output is correct |
