View Compilation Error

0_0_29150487_31361.cpp: In function 'void dfs1(int, int, char)':
0_0_29150487_31361.cpp:16:20: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   int tx = x+next[i][0];
                    ^
0_0_29150487_31361.cpp:17:20: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   int ty = y+next[i][1];
                    ^
0_0_29150487_31361.cpp: In function 'void dfs2(int, int, char)':
0_0_29150487_31361.cpp:50:20: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   int tx = x+next[i][0];
                    ^
0_0_29150487_31361.cpp:51:20: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   int ty = y+next[i][1];
                    ^