let s = readLine()!.map{String($0)}
let n = s.count
var Set: Set<String> = []
for i in 0...9{
    Set.insert(String(i))
}
var k = 0
while !Set.contains(s[k]){
    k += 1
}
let ans = (s[..<k].reversed()+s[k...]).map{String($0)}.joined(separator: "")
print(ans)