本金20000 每次下200押大小，不中就翻倍 ，玩多少次能倍投到破产？？

package zxcz;
import java.util.Random;
public class Time2 {
public static void main(String orgs[]){
double all=20000,all2=0;
int a,t,num=1,x=0;
double bet=20000,startbet,maxbet=0;
for(int j=1;j<=99999;j++){
if(all<bet)
bet=all;
else
bet=200;
startbet=bet;
a=(int)(Math.random()*2);
t=0;
if(a==1){
all=all+bet;
System.out.print(all+" ");
System.out.println("第"+num+++"次,已下金额为"+bet);
}
else{
do{ t++;
a=(int)(Math.random()*2);

}while(a!=1);

for(int i=1;i<=t;i++){
all2=all;
if(bet*2-startbet>all&&bet-startbet<=all){
maxbet=0;
maxbet=bet-startbet;
all=all-maxbet;
System.out.print(all+" ");
System.out.println("第"+num+++"次,已下金额为"+maxbet);
if(all!=0)
System.out.println("倍投跟不上");
else
System.out.println("破产");
break;

}
bet=bet*2;
}
if(bet*2-startbet<=all2){
all=all+startbet;
System.out.print(all+" ");
System.out.println("第"+num+++"次,已下金额为"+(bet*2-startbet));
}
}
if(all==0)
break;

}


}

}