> #include<stdio.h>
> 
> #define min(a,b) ((a)<(b)?(a):(b))
> #define min4(a,b,c,d) min(min(a,b),min(c,d))
> int main()
> {
> 	int a[10000],n=1;
> 	int p2,p3,p5,p7;
> 	p2=p3=p5=p7=1;
> 	a[1]=1;
> 	while(a[n]<2000000000)
> 	{
> 		a[++n]=min4(2*a[p2],3*a[p3],5*a[p5],7*a[p7]);
> 		if(a[n]==2*a[p2]) p2++;
> 		if(a[n]==3*a[p3]) p3++;
> 		if(a[n]==5*a[p5]) p5++;
> 		if(a[n]==7*a[p7]) p7++;
> 	}
> 	while(scanf("%d",&n)&&n)
> 	{
> 		printf("The %d",n);
> 		if(n>10&&n<14)
> 		{
> 			if(n%10==1) printf("th");
> 			if(n%10==2) printf("th");
> 			if(n%10==3) printf("th");
> 		}
> 		else if(n%10==1||n%10==2||n%10==3)
> 		{
>             if(n%10==1) printf("st");
> 			if(n%10==2) printf("nd");
> 			if(n%10==3) printf("rd");
> 		}		
> 		else
> 			printf("th");
> 		printf(" humble number is %d.\n",a[n]);
> 	}
> 	return 0;
> }