#include<bits/stdc++.h>
using namespace std;
#define int long long
const int inf = 1e18;
signed main(){
int n; cin>>n;
vector<int> v(n); for(int& i : v) cin>>i;
// for(int i : v) cout<<i<<" "; cout<<endl;
vector<int> dp(n,inf), dp1(n,inf), mx(n+1,0), mx1(n+1,0);
dp[0] = 0;
mx[0] = 0;
vector<int> last(n+1,0), last1(n+1,0); // just add max(between act and last)
for(int i = 1; i<n; i++){
// cerr<<i<<" "<<v[i-1]<<" "<<dp[i-1]<<" "<<mx[i-1]<<endl;
if(v[i] > v[i-1]){
dp[i] = dp[i-1]; continue;
}
dp[i] = dp[i-1] + max(0ll, abs(v[i] - v[i-1])) + 1;
}
dp1[n-1] = 0;
mx1[n] = 0;
for(int i = n-2; i>=0; i--){
// cerr<<"dp1 "<<i<<" "<<v[i]<<" "<<dp1[i+1]<<" "<<mx1[i+1]<<" ";
if(v[i] > v[i+1]){
dp1[i] = dp1[i+1]; continue;
}
dp1[i] = dp1[i+1] + max(0ll,(v[i+1]- v[i])) + 1;
}
// mx1[n] = v[n-1]; mx[0] = v[0];
// for(int i : mx1) cout<<i<<" "; cout<<endl;
int ans = min(dp[n-1],dp1[0]);
// cerr<<dp[n]<<" "<<dp1[0]<<endl;
for(int i = 1; i<n; i++){
// cerr<<dp[i]<<" "<<dp1[i]<<endl;
ans = min(ans, max(dp[i], dp1[i]));
}
cout<<ans<<endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
448 KB |
Output is correct |
| 7 |
Correct |
1 ms |
348 KB |
Output is correct |
| 8 |
Correct |
1 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
468 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 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 |
344 KB |
Output is correct |
| 17 |
Correct |
1 ms |
344 KB |
Output is correct |
| 18 |
Correct |
1 ms |
604 KB |
Output is correct |
| 19 |
Correct |
1 ms |
344 KB |
Output is correct |
| 20 |
Correct |
1 ms |
600 KB |
Output is correct |
| 21 |
Correct |
1 ms |
348 KB |
Output is correct |
| 22 |
Correct |
1 ms |
348 KB |
Output is correct |
| 23 |
Correct |
1 ms |
460 KB |
Output is correct |
| 24 |
Correct |
1 ms |
348 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
448 KB |
Output is correct |
| 7 |
Correct |
1 ms |
348 KB |
Output is correct |
| 8 |
Correct |
1 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
468 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 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 |
344 KB |
Output is correct |
| 17 |
Correct |
1 ms |
344 KB |
Output is correct |
| 18 |
Correct |
1 ms |
604 KB |
Output is correct |
| 19 |
Correct |
1 ms |
344 KB |
Output is correct |
| 20 |
Correct |
1 ms |
600 KB |
Output is correct |
| 21 |
Correct |
1 ms |
348 KB |
Output is correct |
| 22 |
Correct |
1 ms |
348 KB |
Output is correct |
| 23 |
Correct |
1 ms |
460 KB |
Output is correct |
| 24 |
Correct |
1 ms |
348 KB |
Output is correct |
| 25 |
Correct |
1 ms |
344 KB |
Output is correct |
| 26 |
Correct |
62 ms |
12664 KB |
Output is correct |
| 27 |
Correct |
62 ms |
12624 KB |
Output is correct |
| 28 |
Correct |
62 ms |
12624 KB |
Output is correct |
| 29 |
Correct |
61 ms |
12468 KB |
Output is correct |
| 30 |
Correct |
53 ms |
12368 KB |
Output is correct |
| 31 |
Correct |
60 ms |
12428 KB |
Output is correct |
| 32 |
Correct |
62 ms |
12608 KB |
Output is correct |
| 33 |
Correct |
60 ms |
12516 KB |
Output is correct |
| 34 |
Correct |
62 ms |
12604 KB |
Output is correct |
| 35 |
Correct |
44 ms |
12084 KB |
Output is correct |
| 36 |
Correct |
46 ms |
12372 KB |
Output is correct |
| 37 |
Correct |
46 ms |
12268 KB |
Output is correct |
| 38 |
Correct |
63 ms |
12584 KB |
Output is correct |
| 39 |
Correct |
60 ms |
12624 KB |
Output is correct |
| 40 |
Correct |
64 ms |
12624 KB |
Output is correct |
| 41 |
Correct |
61 ms |
12636 KB |
Output is correct |
| 42 |
Correct |
62 ms |
13012 KB |
Output is correct |
| 43 |
Correct |
60 ms |
12628 KB |
Output is correct |
| 44 |
Correct |
61 ms |
12664 KB |
Output is correct |
| 45 |
Correct |
67 ms |
12612 KB |
Output is correct |
| 46 |
Correct |
60 ms |
12624 KB |
Output is correct |
| 47 |
Correct |
60 ms |
12504 KB |
Output is correct |
| 48 |
Correct |
61 ms |
12468 KB |
Output is correct |
