# coding: utf-8
# Alekssandro Assis Barbosa
# 21211001
# 137

def zera_diagonal(M):
	n = 0
	for i in range(len(M)):
			M[i][n] = 0
			n += 1

75a4ed5a92aba4087e43a8ae65e5114c69b584b8
<mask token>

def zera_diagonal(M):
    n = 0
    for i in range(len(M)):
        M[i][n] = 0
        n += 1

# coding: utf-8
# Alekssandro Assis Barbosa
# 21211001
# 137

def zera_diagonal(M):
	n = 0
	for i in range(len(M)):
			M[i][n] = 0
			n += 1
