https://www.acmicpc.net/problem/10430
package main
import (
"bufio"
"fmt"
"os"
)
var (
w = bufio.NewWriter(os.Stdout)
r = bufio.NewReader(os.Stdin)
)
func main() {
defer w.Flush()
var a, b, c int
fmt.Fscanln(r, &a, &b, &c)
fmt.Fprintf(w, "%d\n%d\n%d\n%d", (a+b)%c, (a%c+b%c)%c, (a*b)%c, (a%c)*(b%c)%c)
}