java.util.*;Main {    = ;    mergSort(List
     
       a, l, r) {        mid;        (l < r) {            mid = (l + r) / ;            (a,l, mid);            (a, mid + , r);           List
      
        b1,b2;            b1 = ArrayList
       
        (a.subList(l,mid+));            b2 = ArrayList
        
         (a.subList(mid+,r+));            List
         
          a1 = a.subList(l,r+);            i1=,i2=,n1=b1.size(),n2=b2.size(),i=;            (;i1
          
           
            <= b2.get(i2)){                    a1.set(i,b1.get(i1));                    i1++;                    i++;                }                {                    a1.set(i,b2.get(i2));                    i++;                    +=n1-i1;                    i2++;                }            }            ( i1< n1){                a1.set(i,b1.get(i1));                i++;                i1++;            }            ( i2< n2){                a1.set(i,b2.get(i2));                i++;                i2++;            }        }    }    main(String[] args) {        List
            
              a;        Scanner scanner = Scanner(System.);        a= ArrayList();        n1 = scanner.nextInt();        (i = ; i < n1; i++) {            a.add(scanner.nextLong());        }        (a, , n1 - );        System..println();}}