View Compilation Error

0_0_33565893_7446.cpp: In function 'void init()':
0_0_33565893_7446.cpp:28:31: error: 'INF' was not declared in this scope
     for(int i=0;i<=n;i++)a[i]=INF;
                               ^
0_0_33565893_7446.cpp: In function 'int main()':
0_0_33565893_7446.cpp:52:37: error: 'INF' was not declared in this scope
                         if(a[nowy]==INF)printf("Company %d is empty.\n",nowy);
                                     ^