View Compilation Error

0_0_13056083_30584.cpp: In function `int main()':
0_0_13056083_30584.cpp:75: error: `m' undeclared (first use this function)
0_0_13056083_30584.cpp:75: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_13056083_30584.cpp:75: error: `k' undeclared (first use this function)