工资计算

#include<stdio.h>
int main()
{
    int m;
    scanf("%d",&m);
    int sum = m;
    int i;
    for(i=3500;i<100002;i+=100)
    {
        if(i > 3500 && i <= 5000)
        {
            int koum = (i-3500)*0.03;
            if(i-koum == m)
            {
                sum = i;
            }
        }
        if(i > 5000 && i <= 8000)
        {
            int koum = 45+(i-5000)*0.1;
            if(i-koum == m)
            {
                sum = i;
            }
        }
        if(i>8000 && i<=12500)
        {
            int koum = 45+300+(i-8000)*0.2;
            if(i-koum == m)
            {
                sum = i;
            }
        }
        if(i>12500 && i<= 38500)
        {
            int koum = 45+300+900+(i-12500)*0.25;
            if(i-koum == m)
            {
                sum = i;
            }
        }
        if(i>38500 && i<=58500)
        {
            int koum = 45+300+900+6500+(i-38500)*0.3;
            if(i-koum == m)
            {
                sum = i;
            }
        }
        if(i>58500 && i<=83500)
        {
            int koum = 45+300+900+6500+6000+(i-58500)*0.35;
            if(i-koum == m)
            {
                sum = i;
            }
        }
        if(i>83500)
        {
            int koum = 45+300+900+6500+6000+8750+(i-83500)*0.45;
            if(i-koum == m)
            {
                sum = i;
            }
        }
    }
    printf("%d",sum);
    return 0;
}