View Compilation Error

0_0_4002380_12054.cpp:3: error: `lld' does not name a type
0_0_4002380_12054.cpp: In function `void spfa(lld)':
0_0_4002380_12054.cpp:28: error: `inf' undeclared (first use this function)
0_0_4002380_12054.cpp:28: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4002380_12054.cpp: In function `int main()':
0_0_4002380_12054.cpp:62: error: `inf' undeclared (first use this function)