1079 所得税

#include<iostream>#include<iomanip>using namespace std;int main(){int a;cin>>a;a=a-3000;if(a<0)cout<<0<<endl;else if(a>0&&a<=1500)cout<<setiosflags(ios::fixed)<<setprecision(2)<<a*0.05<<endl;else if(a>1500&&a<=4500)cout<<setiosflags(ios::fixed)<<setprecision(2)<<75+(a-1500)*0.1<<endl;else if(a>4500&&a<=9000)cout<<setiosflags(ios::fixed)<<setprecision(2)<<375+(a-4500)*0.20<<endl;else if(a>9000&&a<=35000)cout<<setiosflags(ios::fixed)<<setprecision(2)<<1275+(a-9000)*0.25<<endl;else if(a>35000&&a<=55000)cout<<setiosflags(ios::fixed)<<setprecision(2)<<7775+(a-35000)*0.3<<endl;else if(a>55000&&a<=80000)cout<<setiosflags(ios::fixed)<<setprecision(2)<<13775+(a-55000)*0.35<<endl;elsecout<<setiosflags(ios::fixed)<<setprecision(2)<<22525+(a-80000)*0.45<<endl;return 0;}