HDU 1058 Humble Numbers

打表。输出的时候注意th，st，nd，rd。

#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
using namespace std;

long long h[6000];
int cnt;

void f()
{
    cnt=0;
    for(long long a=1;a<=2000000000;a=a*2)
    {
        for(long long b=1;a*b<=2000000000;b=b*3)
        {
            for(long long c=1;a*b*c<=2000000000;c=c*5)
            {
                for(long long d=1;a*b*c*d<=2000000000;d=d*7)
                {
                    cnt++;
                    h[cnt]=a*b*c*d;
                }
            }
        }
    }
    sort(h+1,h+1+cnt);
}

int main()
{
    f();
    int n;
    while(~scanf("%d",&n))
    {
        if(n==0) break;
        if(n%10==1&&n%100!=11) printf("The %dst humble number is ",n);
        else if(n%10==2&&n%100!=12) printf("The %dnd humble number is ",n);
        else if(n%10==3&&n%100!=13) printf("The %drd humble number is ",n);
        else printf("The %dth humble number is ",n);
        printf("%lld.
",h[n]);
    }
    return 0;
}