View Compilation Error

0_0_4717030_6486.cpp: In member function `bool MCMF::spfa()':
0_0_4717030_6486.cpp:60: error: `nv' undeclared (first use this function)
0_0_4717030_6486.cpp:60: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4717030_6486.cpp: In function `int main()':
0_0_4717030_6486.cpp:154: error: expected primary-expression before '=' token
0_0_4717030_6486.cpp:168: error: expected primary-expression before '=' token