def multiplier(a,b):
    x = binaire(a)
    y = binaire(b)
    n = len(x)+len(y)
    abaque = [[0 for j in range(n)] for i in range(n)]
    for i in range(len(x)):
        if x[i]==1:
            for j in range(len(y)):
                if y[j]==1:
                    abaque[i][j] = 1
    while any(1 in abaque[i] for i in range(1,len(x))):
        i,j = position_jeton(abaque)
        abaque[i-1][j+1] += 1
        abaque[i][j] -= 1
        for i in range(len(abaque)):
            print(abaque[i])
        print('')
    return entier(simplifier(abaque[0]))