View Compilation Error

0_0_17207311_13007.cpp: In function 'double SPFA_List(int, int, int)':
0_0_17207311_13007.cpp:106:9: error: 'di' was not declared in this scope
  return di
         ^
0_0_17207311_13007.cpp:106:9: error: expected ';' at end of input
0_0_17207311_13007.cpp:106:9: error: expected '}' at end of input