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281 B

package main
func isInteresting(n int) bool {
s := 0
for n > 0 {
s += n % 10
n /= 10
}
if s%7 == 0 {
return true
}
return false
}
func InterestingNumber(n int) int {
for n > 0 {
if isInteresting(n) == true {
return n
}
n++
}
return -1
}
func main() {
}