View Compilation Error

0_0_33653417_8549.cpp: In function 'void init(long long int)':
0_0_33653417_8549.cpp:19:24: error: 'qp' was not declared in this scope
  rev[n]=qp(fac[n],mod-2);
                        ^
0_0_33653417_8549.cpp: In function 'int main()':
0_0_33653417_8549.cpp:58:18: error: 'az' was not declared in this scope
    res+=(ans(min(az[u],n-sz(u))));
                  ^
0_0_33653417_8549.cpp:58:30: error: 'sz' cannot be used as a function
    res+=(ans(min(az[u],n-sz(u))));
                              ^
0_0_33653417_8549.cpp:58:32: error: 'ans' cannot be used as a function
    res+=(ans(min(az[u],n-sz(u))));
                                ^