def eh_triangular_sup(mq):
        a="True"
 
        lista=[]
        for i in range(len(mq)):
                for j in range(len(mq[0])):
                        if j<i:
                                lista.append(mq[i][j])
        for i in range(len(lista)):
		if lista[i]!=0:
			a="False"
			break
		else:
			a="True"
	if a=="True":
		return True
	else:
		return False
assert eh_triangular_sup([[4,3,1], [0,2,1], [0,0,1]])
assert not eh_triangular_sup([[4,0,0], [0,2,0], [1,0,1]])

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