View Compilation Error

0_0_35288449_26250.cpp: In function 'int dfs(int, int)':
0_0_35288449_26250.cpp:9:11: error: 'q' was not declared in this scope
    if(x+i<q||x+i>n||y+j>n||y+j>m)
           ^
0_0_35288449_26250.cpp:9:18: error: 'n' was not declared in this scope
    if(x+i<q||x+i>n||y+j>n||y+j>m)
                  ^
0_0_35288449_26250.cpp:9:32: error: 'm' was not declared in this scope
    if(x+i<q||x+i>n||y+j>n||y+j>m)
                                ^
0_0_35288449_26250.cpp: In function 'int main()':
0_0_35288449_26250.cpp:28:5: error: expected '}' at end of input
     }
     ^