a = [int(x) for x in open('17var10.txt')]
cnt = 0
min_sum = float('inf') # бесконечность

for i in range(len(a) - 1):
    x, y = a[i], a[i+1]
    if abs(x) % 10 == 7 and abs(y) % 10 == 7:
        cnt += 1
        min_sum = min(min_sum, abs(x - y))

print(cnt, min_sum)