AC日记——Little Elephant and Numbers codeforces 221b

221B - Little Elephant and Numbers

思路:

  水题;

代码:

#include <cmath>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <algorithm>

using namespace std;

int n,ans=0;

bool if_[11];

int main()
{
    scanf("%d",&n);
    int pos=n;
    while(pos>0) if_[pos%10]=true,pos/=10;
    for(int i=1;i<=sqrt(n);i++)
    {
        if(n%i==0)
        {
            pos=i;
            while(pos>0)
            {
                if(if_[pos%10])
                {
                    ans++;
                    break;
                }
                pos/=10;
            }
            pos=n/i;
            while(pos>0)
            {
                if(if_[pos%10])
                {
                    ans++;
                    break;
                }
                pos/=10;
            }
        }
    }
    if(sqrt(n)*sqrt(n)==n)
    {
        pos=sqrt(n);
        while(pos>0)
        {
            if(if_[pos%10])
            {
                ans--;
                break;
            }
            pos/=10;
        }
    }
    cout<<ans;
    return 0;
}
原文地址:https://www.cnblogs.com/IUUUUUUUskyyy/p/6838514.html