View Compilation Error

0_0_19148159_20811.cpp: In function 'int cmp(node, node)':
0_0_19148159_20811.cpp:41:20: error: expected primary-expression at end of input
         return x.id%
                    ^
0_0_19148159_20811.cpp:41:20: error: expected ';' at end of input
0_0_19148159_20811.cpp:41:20: error: expected '}' at end of input