Dauren S

with open('input.txt', 'r') as f:
    nums = f.read().splitlines()
    rows=nums[1:]
    common=[]
    result_string=''
    for r in rows:
        arr=r.split(' ')
        common.append(arr)
    for i in range(len(common[0])):
        for j in range(len(common)):
            result_string+=str(common[j][i])+' '
    print(result_string)