View Compilation Error

0_0_16158141_5065.cpp: In function 'void rebuild(int, int)':
0_0_16158141_5065.cpp:30:8: error: expected primary-expression at end of input
  lazy[x%
        ^
0_0_16158141_5065.cpp:30:8: error: expected ']' at end of input
0_0_16158141_5065.cpp:30:8: error: expected '}' at end of input