poj 1781 In Danger

#include<iostream>#include<cstdio>using namespace std;typedef long long int ll;ll get_num(ll x){    if (x == 1)return 1;    if (x&1)return (2*get_num(x/2)+1);    else return (2*get_num(x/2)-1);}int main(){    ll n,m;    while (scanf("%I64de%I64d",&n,&m) && !(n == 0 && m == 0)) {        for (int i(0); i<m; ++i) { n *= 10;        }        printf("%I64dn",get_num(n));    }    return 0;}