HDU 5832 A water problem 【大数取模,Java 大数也不是万能的。。】

A water problem

Description

Two planets named Haha and Xixi in the universe and they were created with the universe beginning.

There is 73 days in Xixi a year and 137 days in Haha a year.

Now you know the days N after Big Bang, you need to answer whether it is the first day in a year about the two planets.

Input

There are several test cases(about 5 huge test cases).

For each test, we have a line with an only integer N(0≤N), the length of N is up to 10000000.

Output

For the i-th test case, output Case #i: , then output "YES" or "NO" for the answer.

Sample Input

10001
0
333

Sample Output

Case #1: YES
Case #2: YES
Case #3: NO

题目连接：

http://acm.hdu.edu.cn/showproblem.php?pid=5832

题意

给你一个数，问你这个数是否能够整除137和73

题解：

这两个数互质，其实就是问你能否整除10001（73*137,）

这个直接扫一遍就好了。

用string可能会TLE，所以老老实实用char就好了

Java 都是 MLE，看来Java也不是万能的，

AC代码：

#include <iostream>#include <cstdio>#include <cstring>using namespace std;char a[10000005];int main(){    int kase=0;    int n;    //freopen("data/5832.txt","r",stdin);    while(cin>>a)    {        printf("Case #%d: ",++kase);        int len=strlen(a);        int mod=0;        for(int i=0;i<len;i++)        {            mod=(mod*10+a[i]-'0')%10001;        }        if(mod==0)            cout<<"YES"<<endl;        else            cout<<"NO"<<endl;    }    return 0;}

Java MLE 代码：

import java.math.BigInteger;import java.util.Scanner;public class Main {    public static void main(String[] args) {        // TODO Auto-generated method stub        Scanner sc = new Scanner(System.in);        int kase = 0;        while(sc.hasNext()){            BigInteger a = sc.nextBigInteger();            BigInteger mod = BigInteger.valueOf(10001);            BigInteger ans = a.mod(mod);            System.out.printf("Case #%d: ",++kase);            if(ans.equals(BigInteger.ZERO)){                System.out.println("YES");            }else{                System.out.println("NO");            }        }    }}