View Compilation Error

0_0_6673083_8741.cpp: In function `bool spfa(int)':
0_0_6673083_8741.cpp:48: error: `temp' undeclared (first use this function)
0_0_6673083_8741.cpp:48: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6673083_8741.cpp:55: error: `to' undeclared (first use this function)