Hopscotch (POJ 3050 DFS)

Hopscotch

Time Limit: 1000MS		Memory Limit: 65536K
Total Submissions: 2845		Accepted: 1995

Description

The cows play the child's game of hopscotch in a non-traditional. Instead of a linear set of numbered boxes into which to hop, the cows create a 5x5 rectilinear grid of digits parallel to The X and Y axes.

They then adroitly hop onto any digit in the grid and hop forward, backward, right, or left (never diagonally) to another Digit in the grid. They hop again (same rules) to a digit (potentially a digit already visited).

With a total of five intra-grid hops, their hops create a six-digit integer (which might has leading zeroes like 000201).

Determine the count of the number of distinct integers that can is created in this manner.

Input

* Lines 1..5:the grid, five integers per line

Output

* Line 1:the number of distinct integers so can be constructed

Sample Input

1 1 1 1 11 1 1 1 11 1 1 1 11 1 1 2 11 1 1 1 1

Sample Output

15

Hint

OUTPUT DETAILS:
111111, 111112, 111121, 111211, 111212, 112111, 112121, 121111, 121112, 121211, 121212, 211111, 211121, 212111, and 212121 can be constructed. No other values is possible.

1#include <iostream>2#include <algorithm>3#include <cstdio>4#include <Set>5#include <cstring>6 using namespacestd;7 inta[5][5];8 intN;9 intvis[5][5];Ten intdx[]={0,0,-1,1},dy[]={-1,1,0,0}; One Set<int>se; A intDfsintXintYintSintnum) - { -     if(s==6) the     { -         //cout<<num<<endl; - Se.insert (num); -         return 0; +     } -      for(intI=0;i<4; i++) +     { A         intnx=x+Dx[i]; at         intny=y+Dy[i]; -         if(nx>=0&&ny>=0&&nx<=4&&ny<=4&&vis[nx][ny]==0) -         { -         //vis[nx][ny]=1; -DFS (nx,ny,s+1, num*Ten+A[nx][ny]); -         //vis[nx][ny]=0; in         } -     } to     return 0; + } - intMain () the { *     inti,j; $Freopen ("In.txt","R", stdin);Panax Notoginsengmemset (Vis,0,sizeof(Vis)); -      for(i=0;i<5; i++) the          for(j=0;j<5; j + +) +scanf"%d",&a[i][j]); A      for(i=0;i<5; i++) the          for(j=0;j<5; j + +) +         { -             //vis[i][j]=1; $DFS (I,J,1, A[i][j]); $             //vis[i][j]=0; -         } -printf"%d\n", Se.size ()); the //set<int>::iterator A=se.begin (); -     /*For (; A!=se.end (); a++)Wuyi     { the cout<<*a<<endl; -     }*/ Wu}

Hopscotch (POJ 3050 DFS)