View Compilation Error

0_0_35696185_31461.cpp: In function 'int tarjan(int)':
0_0_35696185_31461.cpp:28:27: error: 'iscnt' was not declared in this scope
   if (low[y[j]]>dfn[pos]) iscnt=1;
                           ^
0_0_35696185_31461.cpp:30:28: error: 'iscnt' was not declared in this scope
  if (dfn[pos]==low[pos] || iscnt) {
                            ^