View Compilation Error

0_0_28757607_23896.cpp:44:37: error: expected '}' at end of input
    if(!isroot(f))((x==son[f][1])==(f==
                                     ^
0_0_28757607_23896.cpp: In member function 'void B_Tree::splay_to_rt(int)':
0_0_28757607_23896.cpp:44:37: error: expected primary-expression at end of input
0_0_28757607_23896.cpp:44:37: error: expected ')' at end of input
0_0_28757607_23896.cpp:44:37: error: expected ')' at end of input
0_0_28757607_23896.cpp:44:37: error: expected '}' at end of input
0_0_28757607_23896.cpp:44:37: error: expected '}' at end of input
0_0_28757607_23896.cpp: At global scope:
0_0_28757607_23896.cpp:44:37: error: expected unqualified-id at end of input