Petya and String

#include<bits/stdc++.h>
using namespace std;
int main()
{
    string s1,s2;
    cin>>s1>>s2;
    std:: for_each(s1.begin(),s1.end(),[] (char &c){
             c= :: tolower(c);
             });
   std:: for_each(s2.begin(),s2.end(),[] (char &c){
             c= :: tolower(c);
             });

    if(s1>s2) puts("1");
    if(s1<s2) puts("-1");
    if(s1==s2)puts("0");
}