题解

#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    int a=n%10,b=n/10%10,c=n/100;
    cout<<a<<b<<c;
    return 0;
}

#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    cout<<n%10<<n/10%10<<n/100;
    return 0;
}