using System; using System.IO; using System.Collections.Generic; using static System.Console; using static System.Math; class Start{ static void Solve(){ var a=Rint(); var b=Rint(); for(int i=a;i<=b;i++){ var s=""+i; bool t=false; for(int j=0;j(ref T a,ref T b){T c=a;a=b;b=c;} } class Pair:IComparable>where T1:IComparablewhere T2:IComparable{ public T1 F;public T2 S; public Pair(T1 f,T2 s){F=f;S=s;} public int CompareTo(Pair p)=>F.CompareTo(p.F)!=0?F.CompareTo(p.F):S.CompareTo(p.S); public override string ToString()=>F+" "+S; }