#include<bits/stdc++.h>
using namespace std;
const int MAXN=1e6+5;
int a[MAXN],dp[MAXN],mini,maxi;
set<int> S;
set<int> simpan[MAXN];
bool valid(int id){
if(mini==maxi)return true;
auto it=simpan[id].upper_bound(mini);
auto it2=simpan[id].lower_bound(maxi);
return it==it2;
}
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];
S.insert(0);
S.insert(1e6+5);
simpan[0]=S;
for(int i=1;i<=n;i++){
dp[i]=1e9;
mini=a[i];maxi=a[i];
for(int j=i-1;j>=0;j--){
if(valid(j))dp[i]=min(dp[i],dp[j]+1);
mini=min(mini,a[j]);
maxi=max(maxi,a[j]);
if(a[j]>a[j+1])break;
}
S.insert(a[i]);
simpan[i]=S;
}
cout << dp[n] << '\n';
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 2 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 3 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 4 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 5 |
Correct |
34 ms |
47340 KB |
Output is correct |
| 6 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 7 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 8 |
Correct |
30 ms |
47340 KB |
Output is correct |
| 9 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 10 |
Correct |
31 ms |
47360 KB |
Output is correct |
| 11 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 12 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 13 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 14 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 15 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 16 |
Correct |
30 ms |
47340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 2 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 3 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 4 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 5 |
Correct |
34 ms |
47340 KB |
Output is correct |
| 6 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 7 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 8 |
Correct |
30 ms |
47340 KB |
Output is correct |
| 9 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 10 |
Correct |
31 ms |
47360 KB |
Output is correct |
| 11 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 12 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 13 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 14 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 15 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 16 |
Correct |
30 ms |
47340 KB |
Output is correct |
| 17 |
Correct |
32 ms |
47476 KB |
Output is correct |
| 18 |
Correct |
31 ms |
47360 KB |
Output is correct |
| 19 |
Correct |
31 ms |
47348 KB |
Output is correct |
| 20 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 21 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 22 |
Correct |
33 ms |
47340 KB |
Output is correct |
| 23 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 24 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 25 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 26 |
Correct |
32 ms |
47340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 2 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 3 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 4 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 5 |
Correct |
34 ms |
47340 KB |
Output is correct |
| 6 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 7 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 8 |
Correct |
30 ms |
47340 KB |
Output is correct |
| 9 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 10 |
Correct |
31 ms |
47360 KB |
Output is correct |
| 11 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 12 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 13 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 14 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 15 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 16 |
Correct |
30 ms |
47340 KB |
Output is correct |
| 17 |
Correct |
32 ms |
47476 KB |
Output is correct |
| 18 |
Correct |
31 ms |
47360 KB |
Output is correct |
| 19 |
Correct |
31 ms |
47348 KB |
Output is correct |
| 20 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 21 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 22 |
Correct |
33 ms |
47340 KB |
Output is correct |
| 23 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 24 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 25 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 26 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 27 |
Correct |
34 ms |
48236 KB |
Output is correct |
| 28 |
Correct |
31 ms |
47468 KB |
Output is correct |
| 29 |
Correct |
32 ms |
47468 KB |
Output is correct |
| 30 |
Correct |
32 ms |
47468 KB |
Output is correct |
| 31 |
Correct |
31 ms |
47596 KB |
Output is correct |
| 32 |
Correct |
32 ms |
47468 KB |
Output is correct |
| 33 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 34 |
Correct |
32 ms |
47468 KB |
Output is correct |
| 35 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 36 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 37 |
Correct |
32 ms |
47980 KB |
Output is correct |
| 38 |
Correct |
32 ms |
47980 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 2 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 3 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 4 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 5 |
Correct |
34 ms |
47340 KB |
Output is correct |
| 6 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 7 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 8 |
Correct |
30 ms |
47340 KB |
Output is correct |
| 9 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 10 |
Correct |
31 ms |
47360 KB |
Output is correct |
| 11 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 12 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 13 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 14 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 15 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 16 |
Correct |
30 ms |
47340 KB |
Output is correct |
| 17 |
Correct |
32 ms |
47476 KB |
Output is correct |
| 18 |
Correct |
31 ms |
47360 KB |
Output is correct |
| 19 |
Correct |
31 ms |
47348 KB |
Output is correct |
| 20 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 21 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 22 |
Correct |
33 ms |
47340 KB |
Output is correct |
| 23 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 24 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 25 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 26 |
Correct |
32 ms |
47340 KB |
Output is correct |
| 27 |
Correct |
34 ms |
48236 KB |
Output is correct |
| 28 |
Correct |
31 ms |
47468 KB |
Output is correct |
| 29 |
Correct |
32 ms |
47468 KB |
Output is correct |
| 30 |
Correct |
32 ms |
47468 KB |
Output is correct |
| 31 |
Correct |
31 ms |
47596 KB |
Output is correct |
| 32 |
Correct |
32 ms |
47468 KB |
Output is correct |
| 33 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 34 |
Correct |
32 ms |
47468 KB |
Output is correct |
| 35 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 36 |
Correct |
31 ms |
47340 KB |
Output is correct |
| 37 |
Correct |
32 ms |
47980 KB |
Output is correct |
| 38 |
Correct |
32 ms |
47980 KB |
Output is correct |
| 39 |
Correct |
351 ms |
212332 KB |
Output is correct |
| 40 |
Runtime error |
384 ms |
262148 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 41 |
Halted |
0 ms |
0 KB |
- |
