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BABY.cpp
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BABY.cpp
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//BISMILLAHIRRAHMANIRRAHIM
/*
manus tar shopner soman boro
Author :: Shakil Ahmed
.............AUST_CSE27.........
prob ::
Type ::
verdict::
*/
#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define pi acos(-1.0)
#define ff first
#define ss second
#define re return
#define QI queue<int>
#define SI stack<int>
#define SZ(x) ((int) (x).size())
#define all(x) (x).begin(), (x).end()
#define sqr(x) ((x) * (x))
#define ms(a,b) memset((a),(b),sizeof(a))
#define G() getchar()
#define MAX3(a,b,c) max(a,max(b,c))
#define II ( { int a ; read(a) ; a; } )
#define LL ( { Long a ; read(a) ; a; } )
#define DD ({double a; scanf("%lf", &a); a;})
double const EPS=3e-8;
using namespace std;
#define FI freopen ("input.txt", "r", stdin)
#define FO freopen ("output.txt", "w", stdout)
typedef long long Long;
typedef long long int64;
typedef unsigned long long ull;
typedef vector<int> vi ;
typedef set<int> si;
typedef vector<Long>vl;
typedef pair<int,int>pii;
typedef pair<string,int>psi;
typedef pair<Long,Long>pll;
typedef pair<double,double>pdd;
typedef vector<pii> vpii;
// For loop
#define forab(i, a, b) for (__typeof (b) i = (a) ; i <= b ; ++i)
#define rep(i, n) forab (i, 0, (n) - 1)
#define For(i, n) forab (i, 1, n)
#define rofba(i, a, b) for (__typeof (b)i = (b) ; i >= a ; --i)
#define per(i, n) rofba (i, 0, (n) - 1)
#define rof(i, n) rofba (i, 1, n)
#define forstl(i, s) for (__typeof ((s).end ()) i = (s).begin (); i != (s).end (); ++i)
template< class T > T gcd(T a, T b) { return (b != 0 ? gcd<T>(b, a%b) : a); }
template< class T > T lcm(T a, T b) { return (a / gcd<T>(a, b) * b); }
//Fast Reader
template<class T>inline bool read(T &x){int c=getchar();int sgn=1;while(~c&&c<'0'||c>'9'){if(c=='-')sgn=-1;c=getchar();}for(x=0;~c&&'0'<=c&&c<='9';c=getchar())x=x*10+c-'0'; x*=sgn; return ~c;}
//int dx[]={1,0,-1,0};int dy[]={0,1,0,-1}; //4 Direction
//int dx[]={1,1,0,-1,-1,-1,0,1};int dy[]={0,1,1,1,0,-1,-1,-1};//8 direction
//int dx[]={2,1,-1,-2,-2,-1,1,2};int dy[]={1,2,2,1,-1,-2,-2,-1};//Knight Direction
//int dx[]={2,1,-1,-2,-1,1};int dy[]={0,1,1,0,-1,-1}; //Hexagonal Direction
/* ************************************** My code start here ****************************************** */
int dist( int rx , int cx, int ry , int cy )
{
return abs( rx - ry ) + abs( cx - cy ) ;
}
int dp[17][( 1 << 16 ) + 10 ], n , A[20] , B[20] ;
bool vis[16][(1 << 16) + 10 ];
int DP(int taken , int msk )
{
if( taken == n ) return 0 ;
int &ret = dp[taken][msk];
if( vis[taken][msk] ) return ret ;
vis[taken][msk] = 1 ;
ret = ( 1 << 28 ) ;
for ( int i = 0 ; i < n ; i++ )
{
if( msk & 1 << i ) continue ;
ret = min( ret , DP(taken+1 , ( msk | 1 << i )) + dist( taken , A[taken] - 1 , i , B[i] - 1) );
}
return ret ;
}
int main()
{
// I will always use scanf and printf
// May be i won't be a good programmer but i will be a good human being
while(scanf("%d",&n) && n )
{
rep( i , n )
{
A[i] = II ;
}
rep ( j , n ) B[j] = II ;
ms(vis,0);
printf("%d\n",DP(0,0));
}
return 0;
}