View Code of Problem 13

#include<iostream>
#include<stdio.h>
#include<bits/stdc++.h>
#include<algorithm>
#include<cmath>
#include<cstring>
#include<cstdlib>
using namespace std;
int main(){
    int num, now=1,temp;
    while(cin>>num){
          int a,b,k,flag=0;
          cin>>a>>b>>k;
            for(int i=0;i<k;i++)
            {
                num-=a;
                if(num<1)
                {
                    flag=1;break;
                }
                num+=b;
            }
            if(flag==1)
        cout<<"Case #"<<now++<<": White win"<<endl;
        else cout<<"Case #"<<now++<<": Unknow"<<endl;
    }
return 0;
}