Miscellaneous_code/1087.cpp at main · L0rd-AK/Miscellaneous_code · GitHub

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#include <iostream>
using namespace std;
int main() {

    int a,b,c,d;


    while(1)
    {
        cin>>a>>b>>c>>d;
        if(a==0&&b==0&&c==0&&d==0) break;
        if(a==c&&b==d)
            cout<<0<<endl;
        else if(a==c||b==d)
            cout<<1<<endl;
        else if((a+b)==(c+d))
            cout<<1<<endl;
        else if((c-a)==(d-b))
            cout<<1<<endl;
        else
            cout<<2<<endl;
    }
    return 0;
}