View Compilation Error

0_0_29221474_21629.cpp: In function 'void parse()':
0_0_29221474_21629.cpp:118:19: error: 'sq' was not declared in this scope
   if (!inq[q]&&SZ(sq[q])==2) dq[tot++]=q;inq[q]=1;
                   ^
0_0_29221474_21629.cpp:11:22: note: in definition of macro 'SZ'
 #define SZ(x) ((int)(x).size()) 
                      ^