View Compilation Error

0_0_8475439_21086.cpp: In function `long long int solver(int)':
0_0_8475439_21086.cpp:6: error: `count' undeclared (first use this function)
0_0_8475439_21086.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8475439_21086.cpp: In function `int main()':
0_0_8475439_21086.cpp:19: error: `count' undeclared (first use this function)