#include <iostream>
using namespace std;
int main(){
    int x,y;
    // 不是素数的X仅有 40 41 44 49
    while (cin >> x >> y && (x!=0||y!=0)){
       if((x<=40&&y>=40)||(x<=41&&y>=41)||(x<=44&&y>=44)||(x<=49&&y>=49))
           cout << "Sorry"<<endl;
       else
           cout << "OK"<<endl;
    }
    return 0;
}
// OJ迟迟不进行编译.....暂时就当正确吧..