let line; while(line=readline()){ const[a,b] = line.split(' '); let str = a + b; let arr1 = str.split('').filter((i,idx)=>(idx+1)%2!=0).sort(); let arr2 = str.split('').filter((i,idx)=>(idx+1)%2==0).sort(); for(let i=0;i<arr1.length;i++){ arr2.splice(i*2,0,arr1[i]); } let res = ''; arr2.for...