/******************************************************************
*** Problem : ***
*** Author : Shipu Ahamed (Psycho Timekiller) ***
*** E-mail : shipuahamed01@gmail.com ***
*** University : BUBT,Dept. of CSE ***
*** Team : BUBT_Psycho ***
*** My Blog : http://shipuahamed.blogspot.com ***
*** Facebook : http://www.facebook.com/DeesheharaShipu ***
******************************************************************/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
using namespace std;
#define pi 2*acos(0.0)
#define all(v) v.begin(),v.end()
//input
#define si(t) scanf("%d",&t)
#define sl(t) scanf("%lld",&t)
#define sf(t) scanf("%f",&t)
#define sd(t) scanf("%lf",&t)
#define sc(c) scanf("%c",&c)
#define sii(a,b) scanf("%d%d",&a,&b)
#define sll(a,b) scanf("%lld%lld",&a,&b)
//Output
#define P(a) printf("%d\n",a)
#define PL(a) printf("%lld\n",a)
#define PF(a) printf("%f\n",a)
#define PDB(a) printf("%lf\n",a)
#define PS(a) printf("%s\n",a)
#define PSN(a) printf("%s ",a)
#define PN(a) printf("%d ",a)
#define PLN(a) printf("%lld ",a)
#define PFN(a) printf("%f ",a)
#define PDBN(a) printf("%lf ",a)
#define PP(a,b) printf("%d %d\n",a,b)
#define PPN(a,b) printf("%d %d ",a,b)
#define PPL(a,b) printf("%lld %lld\n",a,b)
#define PPLN(a,b) printf("%lld %lld ",a,b)
#define CP(a) cout< pii;
typedef pair piii;
typedef pair pll;
typedef pair psi;
typedef vector vi;
typedef vector vll;
typedef vector vpii;
typedef vector vs;
typedef set si;
typedef set ss;
typedef map mii;
typedef map mll;
typedef map msi;
template string toString( T Number ){stringstream st;st << Number;return st.str();}
template T SOD(T n) {__typeof(n) sum=0;for(__typeof(n) i=1;i*i<=n;i++)sum+=(n%i)?0:((i*i==n)?i:i+n/i);return sum;}
//For Define
#define forab(i,a,b) for(__typeof(b) i=(a);i<=(b);i++)
#define for0(i,n) forab(i,0,(n)-1)
#define for1(i,n) forab(i,1,n)
#define rforba(i,b,a) for(__typeof(b) i=(b);i>=(a);i--)
#define rfor0(i,n) rforba(i,(n)-1,0)
#define rfor1(i,n) rforba(i,n,1)
#define forstl(i,s) for(__typeof((s).end()) i=(s).begin(); i != (s).end(); i++)
//Debug
#define dbg(x) cout << #x << " -> " << (x) << endl;
#define dbgsarr(i,a) cout<<#a<<"["< "< "< "<>p ; return p;}
ll pow(ll a,ll b, ll m) { ll res = 1; while(b) { if(b & 1) { res = ( (res % m) * (a % m) ) %m ; } a= ((a%m) * (a%m)) %m; b >>= 1; } return res; }
ll modInverse(ll a, ll m){return pow(a,m-2,m);}
////============ CONSTANT ===============////
#define mx7 10000007
#define mx6 1000006
#define mx5 100005
#define inf 1<<30 //infinity value
#define eps 1e-9
#define mx (10010)
#define mod 1000000007
////=====================================////
ll a[mx],dp[mx];
int bs(int len,int i)
{
int low, high, mid;
low=0;
high=len;
while(low<=high)
{
mid = ( low+high ) >> 1;
if(dp[mid] < a[i])
{
low = mid+1;
}
else
high = mid-1;
}
dp[low] = a[i];
return low;
}
int main()
{
int n;
while(si(n)==1)
{
int lis1[mx],lis2[mx];
for(int i=0;i=0;i--)
{
res = bs(m2,i);// lower_bound( dp , dp+n+1 , a[i] ) - dp;
dp[res] = a[i] ;
m2=max(m2,res);
lis2[i]=m2;
}
// P(m2);
int ans=0;
for ( int i = 0 ; i < n ; i++ )
ans = max ( ans , min(lis1[i],lis2[i]));
P(2*ans-1);
}
return 0;
}
/*
7
1 4 2 3 2 4 1
*/
https://github.com/Shipu/OnlineJudgeProblemSolutionWithCPlusPlus/tree/master/uva/10534/10534.cpp