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� 1

with open(input()) as f:
    n = int(f.readline())
    mas = []
    for _ in range(n):
        mas.append(int(f.readline()))
k = 0
for i in range(n):
    x = mas[i]
    for j in range(i + 1, n):
        y = mas[j]
        xy = x * y
        xy6 = xy % (10 ** 6)
        xy7 = xy % (10 ** 7)
        if xy6 == 0 and xy7 != 0:
            k += 1
print(k)

�2
with open(input()) as f:
    n = int(f.readline())
    mas = []
    for _ in range(n):
        mas.append(int(f.readline()))
k = 0
for i in range(n):
    x = mas[i]
    for j in range(i + 1, n):
        y = mas[j]
        sumxy = x + y
        sum11 = sumxy % 11
        xy = x * y
        xy2310 = xy % 2310
        if sum11 == 0 and xy2310 == 0:
            k += 1
print(k)

�1
with open(input()) as f:
n = int(f.readline())
mas = []
for _ in range(n):
mas.append(int(f.readline()))
k = 0
for i in range(n):
x = mas[i]
for j in range(i + 1, n):
y = mas[j]
xy = x * y
xy6 = xy % (10 ** 6)
xy7 = xy % (10 ** 7)
if xy6 == 0 and xy7 != 0:
k += 1
print(k)

�� 11.10.2024 11:10

�2
with open(input()) as f:
n = int(f.readline())
mas = []
for _ in range(n):
mas.append(int(f.readline()))
k = 0
for i in range(n):
x = mas[i]
for j in range(i + 1, n):
y = mas[j]
sumxy = x + y
sum11 = sumxy % 11
xy = x * y
xy2310 = xy % 2310
if sum11 == 0 and xy2310 == 0:
k += 1
print(k)

�� 11.10.2024 11:12

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