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�1
with open(input()) as f:
    n = int(f.readline())
    data = []
    for i in range(n):
        data.append(int(f.readline()))
ans = 0
for i in range(0, n):
    for j in range(i+1, n-1):
        a = data[i]*data[j]
        
        if a % (10**6) == 0 and a % (10**7) != 0:
            ans += 1

print(ans)

�2
with open(input()) as f:
    n = int(f.readline())
    data = []
    for i in range(n):
        data.append(int(f.readline()))
ans = 0
for i in range(0, n):
    for j in range(i+1, n-1):
        a = data[i]*data[j]
        b = data[i] + data[j]
        if b % 11 == 0 and a % 2310 == 0:
            ans += 1

print(ans)

�1
with open(input()) as f:
n = int(f.readline())
data = []
for i in range(n):
data.append(int(f.readline()))
ans = 0
for i in range(0, n):
for j in range(i+1, n-1):
a = data[i]*data[j]

if a % (10**6) == 0 and a % (10**7) != 0:
ans += 1

print(ans)

�2
with open(input()) as f:
n = int(f.readline())
data = []
for i in range(n):
data.append(int(f.readline()))
ans = 0
for i in range(0, n):
for j in range(i+1, n-1):
a = data[i]*data[j]
b = data[i] + data[j]
if b % 11 == 0 and a % 2310 == 0:
ans += 1

print(ans)

�� 11.10.2024 11:14

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