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0_0_20613802_4422.cpp:15:5: error: expected unqualified-id before numeric constant
     0)             {               double t=dmult(oa,tmp)/dis(oa)/dis(tmp);               if(t>Max)                {                  Max=t;                  flag=1;                  find=i;               }            }            else if(tt<0)            {               double t=dmult(ob,tmp)/dis(ob)/dis(tmp);               if(t>Max)               {                  Max=t;flag=2;find=i;               }            }         }         printf("%d",find);         la=be;         be=find;         if(s)            putchar(' ');         else            putchar('\n');         if(flag==1)          {            ob.x=pp[la].x-pp[be].x;             ob.y=pp[la].y-pp[be].y;            oa.x=-ob.x;              oa.y=-ob.y;         }         else         {            oa.x=pp[la].x-pp[be].x;            oa.y=pp[la].y-pp[be].y;            ob.x=-oa.x;            ob.y=-oa.y;         }       }   }   return 0;}
     ^