PAT 1023

输入

1234567899

输出

Yes
2469135798
#include <cstdio>
#include <iostream>
#include <cstdlib>
#include <algorithm>
#include <vector>
#include <cmath>
#include <string>
#include <cstring>

using namespace std;



int main()
{
    string s1,s2="";

    cin>>s1;


    reverse(s1.begin(),s1.end());

    auto it=s1.begin();

    int carry=0;

    while(it!=s1.end())
    {

        int temp=( *it -'0')*2+carry;

        carry=temp/10;

        char c=temp%10 + '0';

        s2.push_back(c);

        it++;

    } 

//这里没有必要,因为,如果最终多出一个进位,也就e
//二者的长度不同了,这样一定是no 


//这里之前错了,直接写的是s2.push_back(carry)
//要注意carry是int型 0/1, 需要push进去字符型 ‘1’ 
    if( carry!=0)
    {
        s2.push_back('1');

    } 

    reverse(s2.begin(),s2.end());


    string s3=s2;

    sort(s1.begin(),s1.end());
    sort(s3.begin(),s3.end());

    if(s1==s3 )
    {
        cout<<"Yes"<<endl;  
    }
    else
    {
        cout<<"No"<<endl;   
    }

    cout<<s2;



    return 0;
}