C :

#include<stdio.h>
int main()
{
    int  a,r;
    scanf("%d",&a);

    if(a<=100000)
        r=0.1*a;
     else if(100000<a<=200000)
        r=0.075*(a-100000)+100000*0.1;
      else if(200000<a<=400000)
        r=0.05*(a-200000)+100000*(0.1+0.075);
    else if(400000<a<=600000)
        r=0.03*(a-400000)+100000*(0.1+0.075)+200000*0.05;
    else if(600000<a<=1000000)
        r=0.015*(a-600000)+100000*(0.1+0.075)+200000*0.05+200000*0.03;
    else if(a>1000000)
        r=0.01*(a-1000000)+100000*(0.1+0.075)+200000*(0.05+0.03)+400000*0.015;
   printf("%d",r);
return 0;
}

C++ :

#include<bits/stdc++.h>
using namespace std;
double a,sum;
int main()
{
	cin>>a;
	if(a<=100000)
	    sum=a/10;
	else
	{
		if(a<=200000)
		    sum=10000+(a-100000)/100*7.5;
		else
		{
			if(a<=400000)
			    sum=17500+(a-200000)/100*5;
			else
			{
				if(a<=600000)
				    sum=27500+(a-400000)/100*3;
				else
				{
					if(a<=1000000)
					    sum=33500+(a-600000)/100*1.5;
					else
					    sum=39500+(a-1000000)/100;
				}
			}
		}
	}
	cout<<sum;
	
	return 0;
}