View Compilation Error

0_0_17921616_12292.cpp: In member function 'void Point::update()':
0_0_17921616_12292.cpp:37:23: error: 'n' was not declared in this scope
         if (judge(x,y,n,m) == -1) rank = -1;
                       ^
0_0_17921616_12292.cpp:37:25: error: 'm' was not declared in this scope
         if (judge(x,y,n,m) == -1) rank = -1;
                         ^