201612-2.cpp

#include<iostream>
using namespace std;

int main()
{
	int s,n,i=34,j,k=1,sum,t;
	cin>>n;
	s=n-3500;
	if(s<=0)
		cout<<n;
	else
	{
		if(s<=1500-45)
		{
			t=s;
			t=t*100/97;
			sum=3500+t;
		}
		else if(s<=4500-300-45)
		{
			t=(s+45-1500)*100/90;
			sum=3500+1500+t;
		}
		else if(s<=9000-900-300-45)
		{
			t=(s+45+300-4500)*100/80;
			sum=3500+4500+t;
		}
		else if(s<=35000-6500-900-300-45)
		{
			t=(s+45+300+900-9000)*100/75;
			sum=3500+9000+t;
		}
		else if(s<=55000-6000-6500-900-300-45)
		{
			t=(s+45+300+900+6500-35000)*100/70;
			sum=3500+35000+t;
		}
		else if(s<=80000-8750-6000-6500-900-300-45)
		{
			t=(s+45+300+900+6500+6000-55000)*100/65;
			sum=3500+55000+t;
		}
		else 
		{
			t=(s+45+300+900+6500+6000+8750-80000)*100/55;
			sum=3500+80000+t;
		}				
		cout<<sum;
	}
}