#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N=2e5+50;
signed main(){
int n,x;
cin>>n>>x;
int a[n+1];
for(int i=1;i<=n;i++)cin>>a[i];
if(x==0){
int lis=0;
int Y[n+1];
for(int i=0;i<=n;i++)Y[i]=1e18;
for(int i=1;i<=n;i++){
auto P=lower_bound(Y+1,Y+n+1,a[i])-Y;
if(Y[P]==1e18)lis++;
Y[P]=a[i];
}
cout<<lis;
return 0;
}
if(x==1e9){
int ans=0;
int dp[n+1];
for(int i=0;i<=n;i++)dp[i]=1e18;
int suf[n+1];
for(int i=0;i<=n;i++)suf[i]=1;
int pref[n+1];
for(int i=0;i<=n;i++)pref[i]=0;
for(int i=1;i<=n;i++){
auto P=lower_bound(dp+1,dp+n+1,a[i])-dp;
if(dp[P]==1e18)pref[i]=pref[i-1]+1;
else pref[i]=pref[i-1];
dp[P]=a[i];
}
for(int i=n;i>=1;i--){
for(int j=i+1;j<=n;j++){
if(a[i]<a[j])suf[i]=max(suf[i],suf[j]+1);
}
}
int S[n+2];
for(int i=0;i<=n+1;i++)S[i]=0;
for(int i=n;i>=1;i--)S[i]=max(S[i+1],suf[i]);
for(int i=1;i<n;i++){
ans=max(ans,pref[i]+S[i+1]);
}
cout<<ans;
return 0;
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
5468 KB |
Output is correct |
2 |
Correct |
68 ms |
5412 KB |
Output is correct |
3 |
Correct |
66 ms |
5284 KB |
Output is correct |
4 |
Correct |
67 ms |
5456 KB |
Output is correct |
5 |
Correct |
47 ms |
4532 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
14 ms |
1116 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
2081 ms |
4472 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |