01. Back To The Past

package main

import (
    "fmt"
    "math"
)

func main() {
    var money float64
    fmt.Scanln(&money)

    var year int
    fmt.Scanln(&year)

    var ivanchoAge = 18

    for i := 1800; i <= year; i++ {
        if i % 2 == 0 {
            money -= 12000
        } else {
            money -= float64(12000 + 50 * ivanchoAge)
        }
        ivanchoAge++
    }

    if money < 0 {
        fmt.Printf("He will need %.2f dollars to survive.", math.Abs(money))
    } else {
        fmt.Printf("Yes! He will live a carefree life and will have %.2f dollars left.", money)
    }
}