N consego achar a resposta errada no Udebug e esta dando erro de 5%

#include <iostream>

using namespace std;

int main()
{
    int a,b,c,d1,d2;
    cin>>a>>b>>c;
    d1=b-a;
    d2=c-b;
    if(a<b){
        if(b>=c){
            cout<<":("<<endl;
        }
        else if(b<c && abs(d1)>abs(d2)){
            cout<<":("<<endl;

        }
        else if(b<c && abs(d1)<=abs(d2)){
            cout<<":)"<<endl;

        }

    }
    else if(a>b){

        if(b<c){
            cout<<":)"<<endl;

        }
        else if(b>c && abs(d2)<abs(d1)){
            cout<<":)"<<endl;

        }
        else if(b>c && abs(d2)>=abs(d1)){
           cout<<":("<<endl; 
        }

    }
    else{
        if(b<c){
            cout<<":)"<<endl;

        }
        else{
            cout<<":("<<endl;

        }
    } 

   return 0;
}