C :

#include<string.h>
#include<stdio.h>
int main()
{
    int m;
    char a[100];
    scanf("%s",a);
    m=strlen(a);
   if(m==10)
       printf("shi yi");
    if(m==9)
        printf("yi");
    if(m==8)
        printf("qian wan");
    if(m==7)
        printf("bai wan");
    if(m==6)
        printf("shi wan");
    if(m==5)
        printf("wan");
    return 0;
}

C++ :

#include <iostream>
using namespace std;
int main()
{
	long int n;
	cin>>n;
	if(n >= 10000 && n <= 9999999999)
	{
		if(n >= 10000 && n < 100000)
			cout<<"wan";
		else if(n >= 100000 && n < 1000000)
			cout<<"shi wan";
		else if(n >= 1000000 && n < 10000000)
			cout<<"bai wan";
		else if(n >= 10000000 && n < 100000000)
			cout<<"qian wan";
		else if(n >= 100000000 && n < 1000000000)
			cout<<"yi";
		else
			cout<<"shi yi";
	}
	
	return 0;
} 

Python :

n = int(input())
if 10000 <= n < 100000:
    print('wan')
elif 100000 <= n < 1000000:
    print('shi wan')
elif 1000000 <= n < 10000000:
    print('bai wan')
elif 10000000 <= n < 100000000:
    print('qian wan')
elif 100000000 <= n < 1000000000:
    print('yi')
elif 1000000000 <= n < 10000000000:
    print('shi yi')