View Compilation Error

0_0_14191643_6598.cpp: In function 'int main()':
0_0_14191643_6598.cpp:35:13: error: 'm' was not declared in this scope
   k = min(k,m);
             ^
0_0_14191643_6598.cpp:8:26: note: in definition of macro 'min'
 #define  min(a,b)  ((a)<(b)?(a):(b))
                          ^