View Compilation Error

0_0_13796925_18514.cpp: In function 'int main()':
0_0_13796925_18514.cpp:169:20: error: 'www' was not declared in this scope
                 }  www.2cto.com
                    ^
0_0_13796925_18514.cpp:173:17: error: 'else' without a previous 'if'
                 else if (Lans==0) go_right(Rans); 
                 ^