from random import*
n=int(input("Nombres d'élèves"))
m=int(input("Nombres d'évaluations"))
tab=[[0 for i in range(m)] for i in range(n)]


for i in range(n):
    for j in range(m):
        tab[i][j]=randint(0,20)

for i in range(n):
    for j in range(m):
        print(tab[i][j],'',end='')
    print('')