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package correct
func more(a, b int) int {
if a < b {
return b
}
return a
}
func max(a, b, c, d int) int {
if a >= b && a >= c && a >= d {
return a
}
if b >= a && b >= c && b >= d {
return b
}
if c >= a && c >= b && c >= d {
return c
}
if d >= a && d >= b && d >= c {
return d
}
return -1
}
func ReviveThreeNums(a, b, c, d int) int {
maxi := -111
if a != max(a, b, c, d) {
maxi = more(maxi, max(a, b, c, d)-a)
}
if b != max(a, b, c, d) {
maxi = more(maxi, max(a, b, c, d)-b)
}
if c != max(a, b, c, d) {
maxi = more(maxi, max(a, b, c, d)-c)
}
if d != max(a, b, c, d) {
maxi = more(maxi, max(a, b, c, d)-d)
}
return maxi
}