View Compilation Error

0_0_35923169_18071.cpp: In function 'int km()':
0_0_35923169_18071.cpp:67:10: error: 'inf' was not declared in this scope
   la[i]=-inf;
          ^
0_0_35923169_18071.cpp:79:11: error: 'inf' was not declared in this scope
    upd[j]=inf;
           ^