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This is a paragraph

#include<cstdio>
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
    while(1)
    {
    char s[100];
    cin>>s;
    if(s[0]!='-')
        cout<<s<<endl;
    else
    {
        int c,d;
        int len=strlen(s);
        if(len==3&&s[2]=='0')
        {
            cout<<0<<endl;
        }
        else
        {
       c=s[len-1]-48;
       d=s[len-2]-48;
       s[len-2]='\0';
       printf("%s",s);
       if(c>d)
        printf("%d\n",d);
       else printf("%d\n",c);

    }
    }
    }
    return 0;
}