from random import randint


mtr =[[0,0,0,0],[0,0,0,0],[0,0,0,0],[0,0,0,0]]
for i in range(4):
    for j in range(4):
        tmp = randint(-20, 20)
        mtr[i][j] = tmp

print(mtr)
for i in range(4):
    for j in range(4):
        print(mtr[i][j], end = " ")
    print()

max = mtr[0][0]
index_max_el = (0,0)
for i in range(4):
    for j in range(4):
        if mtr[i][j] > max:
            max = mtr[i][j]
            index_max_el = (i,j)

print("Индексы max_el: ", index_max_el)

mltp = 1
for i in range(4):
    for j in range(4):
        if j > i:
            mltp *= mtr[i][j]

print("Произведение: ", mltp)