题解

AC
#include<bits/stdc++.h>
#include<bits/stdc++.h>
using namespace std;
int main(){
int a,b=0,count=0;
cin>>a;
while(true){
b=a%10;
count=count*10+b;
a/=10;
if(a==0){
break;
}
}
cout<<count;
return 0;
}