View Compilation Error

0_0_28585141_1062.cpp: In function 'long long int ask(long long int, long long int, long long int, long long int, long long int)':
0_0_28585141_1062.cpp:33:47: error: expected primary-expression before '%' token
     if(R > m) ret = (ret + ask(L,R,rson))%mod;%
                                               ^
0_0_28585141_1062.cpp:33:47: error: expected primary-expression at end of input
0_0_28585141_1062.cpp:33:47: error: expected '}' at end of input