#include <iostream>
#include <conio.h>
#include <math.h>
using namespace std; // 1. Khai bao thu vien
main ()
{
    int n,t;
    char ten[25];
    cout <<"Nhap ten khach hang : ";
    cin>>ten;
    cout <<"Nhap vao so Km da di = ";
    cin>>n;
    if (n<=100)
       t = n * 3000;
    else
        t = (n-100)*2500 + 100*3000;
    cout <<ten <<" da di "<<n <<" km so tien phai tra "<<t <<" VND";                                 
    getch();
}