M=[[7,0],
[1,5]]
def siu(M):
s=0
for i in range(len(M)):
for j in range(len(M[0])):
s+=M[i][j]
return s
print(siu(M))
TT1bWzcsMF0sCiAgIFsxLDVdXQoKCgpkZWYgc2l1KE0pOgoJcz0wCglmb3IgaSBpbiByYW5nZShsZW4oTSkpOgoJCWZvciBqIGluIHJhbmdlKGxlbihNWzBdKSk6CgkJCXMrPU1baV1bal0KCXJldHVybiBzCgpwcmludChzaXUoTSkp