View Compilation Error

0_0_19635092_17526.cpp: In function 'int dfs(int)':
0_0_19635092_17526.cpp:21:25: error: invalid types 'int[int]' for array subscript
         if(relation[x][i] == 1&&visit[i] == 0)
                         ^
0_0_19635092_17526.cpp: In function 'int main()':
0_0_19635092_17526.cpp:54:30: error: invalid types 'int[int]' for array subscript
                 relation[x][y] = 1;
                              ^