The first question of the Microsoft 2017 Preparatory writing test

The first question of the

Microsoft 2017 Preparatory pen Questions AC code:

#include <vector> #include <math.h> #include <iostream> #include <iomanip> using namespace std;
    Double pm (int p,double Q, long N, int aa) {if (N = 0) return 0;
    Double p_org;
    if (N-1 > aa) p_org = 0;
        else{int a = Floor (P/pow (2,n-1));
    p_org = Double (a)/100.0;
    Vector<double> ans;
    Double tmp;
        if (p_org > 0) {ans.push_back (1+pm (P,Q,N-1,AA)) *p_org);
    TMP = (ans[0]/p_org)-1.0;
        } else{ans.push_back (0.0);
    TMP = PM (P,Q,N-1,AA);
    Double p = p_org;
    Double p_b = 1;
        for (int n=1;n<100;n++) {ans.push_back (n+1+tmp);
        Ans[n] = ans[n] * p_b * (1-P);
            if (p+q>=1) {Double an = 0;
            for (int i=0;i<ans.size (); i++) {a = An+ans[i];
        return to an;
        else {Ans[n] = ans[n]* (P+Q);
        } p_b = P_b * (1-p); p = P+ Q;
} return-1;
    int main () {int p,q,n;
    CIN >> P >> Q >> N;
    Long Maxx = N;
            for (int i=0;i<n;i++) {if (Pow (2,i) >= P) {maxx = i;
        Break
    Double ans = pm (p,q/100.0,n,maxx);
cout << setprecision (2) << setiosflags (ios::fixed) << ans << Endl; }