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package main
import (
"fmt"
"os"
"strconv"
)
func main() {
if len(os.Args) == 4 {
var result int
firstArg, err := strconv.Atoi(os.Args[1])
if err != nil {
fmt.Println(0)
return
}
operator := os.Args[2]
secondArg, err1 := strconv.Atoi(os.Args[3])
if err1 != nil {
fmt.Println(0)
return
}
if secondArg == 0 && operator == "/" {
fmt.Println("No division by 0")
return
} else if secondArg == 0 && operator == "%" {
fmt.Println("No modulo by 0")
return
} else if operator == "+" {
result = firstArg + secondArg
if !((result > firstArg) == (secondArg > 0)) {
fmt.Println(0)
return
}
} else if operator == "-" {
result = firstArg - secondArg
if !((result < firstArg) == (secondArg > 0)) {
fmt.Println(0)
return
}
} else if operator == "/" {
result = firstArg / secondArg
} else if operator == "*" {
result = firstArg * secondArg
if firstArg != 0 && (result/firstArg != secondArg) {
fmt.Println(0)
return
}
} else if operator == "%" {
result = firstArg % secondArg
}
fmt.Println(result)
}
}