View Compilation Error

0_0_16556281_20544.cpp: In function 'void dfs(int, int)':
0_0_16556281_20544.cpp:14:9: error: invalid operands of types 'int [1005]' and 'int' to binary 'operator^'
     a[x]^=1;
         ^
0_0_16556281_20544.cpp:14:9: error:   in evaluation of 'operator^=(int [1005], int)'
0_0_16556281_20544.cpp:16:16: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
     if(a[x-1]==1)
                ^
0_0_16556281_20544.cpp:17:16: error: too few arguments to function 'void dfs(int, int)'
         dfs(x-1);
                ^
0_0_16556281_20544.cpp:10:6: note: declared here
 void dfs(int x,int y)
      ^
0_0_16556281_20544.cpp:25:12: error: too few arguments to function 'void dfs(int, int)'
     dfs(x+1);
            ^
0_0_16556281_20544.cpp:10:6: note: declared here
 void dfs(int x,int y)
      ^