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#include <map>
#include <set>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <vector>
#include <cstdio>
#include <string>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <algorithm>
using namespace std;
#define X first
#define Y second
#define pb push_back
#define mp make_pair
#define all(a) (a).begin(), (a).end()
#define fillchar(a, x) memset(a, x, sizeof(a))
#define copy(a, b) memcpy(a, b, sizeof(a))
typedef long long ll;
typedef pair<int, int> pii;
typedef unsigned long long ull;
//#ifndef ONLINE_JUDGE
void RI(vector<int>&a,int n){a.resize(n);for(int i=;i<n;i++)scanf("%d",&a[i]);}
void RI(){}void RI(int&X){scanf("%d",&X);}template<typename...R>
void RI(int&f,R&...r){RI(f);RI(r...);}void RI(int*p,int*q){int d=p<q?:-;
while(p!=q){scanf("%d",p);p+=d;}}void print(){cout<<endl;}template<typename T>
void print(const T t){cout<<t<<endl;}template<typename F,typename...R>
void print(const F f,const R...r){cout<<f<<", ";print(r...);}template<typename T>
void print(T*p, T*q){int d=p<q?:-;while(p!=q){cout<<*p<<", ";p+=d;}cout<<endl;}
//#endif
template<typename T>bool umax(T&a, const T&b){return b<=a?false:(a=b,true);}
template<typename T>bool umin(T&a, const T&b){return b>=a?false:(a=b,true);}
template<typename T>
void V2A(T a[],const vector<T>&b){for(int i=;i<b.size();i++)a[i]=b[i];}
template<typename T>
void A2V(vector<T>&a,const T b[]){for(int i=;i<a.size();i++)a[i]=b[i];}
const double PI = acos(-1.0);
const int INF = 1e9 + ;
const double EPS = 1e-8;
/* -------------------------------------------------------------------------------- */
int get(int sum, int &x, int &mark) {
if (sum == ) {
x = ;
mark = ;
return ;
}
mark = ;
x = ;
int ans = ;
while (sum) {
mark ^= ;
if (mark) ans += sum % ;
else ans -= sum % ;
x += sum % ;
sum /= ;
}
return ans;
}
int main() {
#ifndef ONLINE_JUDGE
freopen("in.txt", "r", stdin);
//freopen("out.txt", "w", stdout);
#endif // ONLINE_JUDGE
int n, t, cas = ;
while (cin >> n >> t, n != - && t != -) {
int mark, sum, ans;
ans = get(n, sum, mark);
for (int i = ; i < t; i ++) {
int x, buf = get(sum, x, mark);
if (mark) ans = -ans + buf;
else ans = ans + buf;
sum += x;
}
printf("Case #%d: %s\n", ++ cas, ans % ? "No" : "Yes");
}
return ;
}
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