View Compilation Error

0_0_35787688_26077.cpp: In function 'int dfs(int, int)':
0_0_35787688_26077.cpp:31:5: error: 'dp' was not declared in this scope
  if(dp[x][y] != inf)
     ^
0_0_35787688_26077.cpp:43:4: error: 'dp' was not declared in this scope
    dp[x][y] = min(dp[x][y],a[x][y]+dp[dx][dy]);
    ^
0_0_35787688_26077.cpp: In function 'void dfs1(int, int)':
0_0_35787688_26077.cpp:54:23: error: 'dp' was not declared in this scope
  for(int k = 1 ; k <= dp[1][1] ; k++)
                       ^
0_0_35787688_26077.cpp: In function 'int main()':
0_0_35787688_26077.cpp:81:10: error: 'dp' was not declared in this scope
   memset(dp,0x3f,sizeof(dp));
          ^