class Temp{
 
    public Integer a;
 
    Temp(Integer i){
        this.a=i;
    }
 
    public static Integer sum=0;
 
    public static sum(Temp c){
        sum+=(c?.a)?:3
    }
    static void main(String[] args){
 
        Temp x=new Temp(1);
        Temp y=new Temp(1);
        Temp z=new Temp(2);
        Temp k=new Temp(3);
 
        sum(x);
        sum(y);
        sum(z);
        sum(k);
 
        println sum
    }
}

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