#include<bits/stdc++.h>
#define For(i,a,n) for(int i=a;i<=n;i++)
using namespace std;
int len;
string change(string s){
    string ans="";
    int n=s.size();
    for(int i=n-1;i>=0;i--)ans+=s[i];
    return ans;
}
string solve0(string s){
    string ans="";
    int n=s.size();
    bool f=0;
    For(i,0,n-1){
        if(!f&&s[i]!='0') f=1;
        if(f) ans+=s[i];
    }
    if(n!=0 && ans.size()==0){
        ans+="0";
    }//考虑0.0
    return ans;
}
int main(){
    string s;
    cin>>s;
    string s1="",s2="";
    len=s.size();
    char ch=' ';
    bool f=0;
    For(i,0,len-1){
        if(!(s[i]>='0' && s[i]<='9')){
            f=1;
            ch=s[i];
            continue;
        }
        if(!f) s1+=s[i];
        else s2+=s[i];
    }
    if(ch=='.'){
        s2=solve0(s2);
    }//考虑样例“600.048”
    cout<<solve0(change(s1))<<ch<<solve0(change(s2));
    return 0;
}

题目很水，小坑很多

def rev_int(s):
    rev_str = s[::-1].lstrip('0')
    return rev_str if rev_str else '0'

def rev_dec(s):
    rev_str = s[::-1].rstrip('0')
    return rev_str if rev_str else '0'

s = input().strip()
if s.endswith('%'):
    num = s[:-1]
    print(rev_int(num) + '%')
elif '/' in s:
    a, b = s.split('/')
    print(f"{rev_int(a)}/{rev_int(b)}")
elif '.' in s:
    x, y = s.split('.')
    print(f"{rev_int(x)}.{rev_dec(y)}")
else:
    print(rev_int(s))