75分

#include<iostream>
#include<string>
#define MAXN 300
using namespace std;

int main()
{
	int cnt = 0;
	char pos;
	string s;
	cin >> s;
	
	int len = s.length();
	for (int i=0;i<len;i++)
		if (s[i] >= '0' && s[i] <= '9')cnt++;
		else 
		{
			pos = s[i];
			break;
		}
		
	int cen1 = cnt;
    cen1--;
	while (s[cen1] == '0' && cen1 > 0)cen1--;
	for (int i=cen1;i>=0;i--)
		cout << s[i];
		
	if (pos == '.'||'/')cout << pos;
	else if (pos == '%'){cout << pos;return 0;}
	else return 0;
	
	int cen2 = len -1;
	while (s[cnt+1] == '0' && cnt<cen2-1)cnt++;
	while (s[cen2] == '0' && cen2 >cnt+1)cen2--;
	for (int i=cen2;i>cnt;i--)
		cout << s[i];
		
	return 0;
}