View Compilation Error

0_0_16021371_7049.cpp: In function 'bool dfs(int, int, int)':
0_0_16021371_7049.cpp:11:39: error: invalid types 'int[int]' for array subscript
     if(z!=len+1&&a[x]==c[z]&&!vis[x][y]){//应标记为二维，如果标记为一维，则会出现回溯到很前面的情况，有一些标记没有还愿，会wa
                                       ^
0_0_16021371_7049.cpp:12:17: error: invalid types 'int[int]' for array subscript
         vis[x][y]=1;
                 ^
0_0_16021371_7049.cpp:17:21: error: invalid types 'int[int]' for array subscript
             vis[x][y]=0;
                     ^
0_0_16021371_7049.cpp:20:39: error: invalid types 'int[int]' for array subscript
     if(z!=len+1&&b[y]==c[z]&&!vis[x][y]){
                                       ^
0_0_16021371_7049.cpp:21:17: error: invalid types 'int[int]' for array subscript
         vis[x][y]=1;
                 ^