View Compilation Error

0_0_27859781_22854.cpp: In function 'bool cmp(const node&, const node&)':
0_0_27859781_22854.cpp:13:25: error: 'b' was not declared in this scope
     if(aa.l>=aa.r&&bb.l<b.r) return 0;
                         ^
0_0_27859781_22854.cpp:15:14: error: expected primary-expression before ')' token
     if(aa.l>=)
              ^
0_0_27859781_22854.cpp:16:1: error: expected primary-expression before '}' token
 }
 ^
0_0_27859781_22854.cpp: At global scope:
0_0_27859781_22854.cpp:76:1: error: 'https' does not name a type
 https://blog.csdn.net/albertluf/article/details/81177400
 ^