#include <iostream>

using namespace std;

const double N1=35000;

const int N2=15000;

const int N3=5000;

int main()

{

	double salary;

	double sui=0;

	cout<<"Enter the salary: ";

	while(cin>>salary && salary>=0)

	{

		if(salary<=N3)

		{

			sui=0;

			//cout<<"税收= "<<sui<<endl;

		}

		else if(salary>N3 && salary<=N2)

		{

			sui=(salary-N3)*0.10+N3*0;

			//cout<<"税收= "<<sui<<endl;

		}

		else if(salary>N2 && salary<=N1)

		{

			sui=(salary-N2)*0.15+(N2-N3)*0.10+N3*0;

			//cout<<"税收= "<<sui<<endl;

		}

		else

		{

			sui=(salary-N1)*0.20+(N1-N2)*0.15+(N2-N3)*0.10+N3*0;

			//cout<<"税收= "<<sui<<endl;

		}

		cout<<"sui= "<<sui<<endl;

		cout<<"Enter the salary: ";

	}

	system("pause");

	return 0;

}