SO C++

#include<bits/stdc++.h>
using namespace std;
string a,b;
void nhap()
{
    getline(cin,a);
        getline(cin,b);
}
void giai()
{
    if(a.length()<b.length())
           cout<<"-1";
    if(a.length()>b.length())
           cout<<"1";
    if(a.length()==b.length()
    {
        if (a<b) cout<<"-1";
        if (a==b) cout<<"0";
        if (a>b) cout<<"1";
    }
}
int main()
{
    freopen("SO.inp","r",stdin);
    freopen("SO.out","w",stdout);
    nhap();
    giai();    
}