View Compilation Error

0_0_29149057_429.cpp: In function 'int work()':
0_0_29149057_429.cpp:244:28: error: invalid operands of types 'void(int, int&, int, int, int, int)' and 'int' to binary 'operator%'
    if (!pre[w[i]]) cupdate%2
                            ^
0_0_29149057_429.cpp:244:28: error: expected '}' at end of input
0_0_29149057_429.cpp:244:28: error: expected '}' at end of input
0_0_29149057_429.cpp:244:28: error: expected '}' at end of input