MOD = 10 ** 9 + 7
K = int(input())
DL = [list(map(int, input().split())) for _ in range(K)]

A = [5, 1, 3, 2, 6, 4] #桁が上がるときにかける数
B = [0, 1, 4, 6, 5, 2] #xxxxの個数を計算する時にかける数

dp1 = [[0] * 7 for _ in range(6)]
# dp[i][j]:= 桁数i%6、数%7 の個数
dp1[0][0] = 1

for d, l in reversed(DL):
    dp2 = [[0] * 7 for _ in range(6)]
    add = (d * B[l % 6]) % 7
    for i in range(6):
        for j in range(7):
            dp2[(i + l) % 6][(j + add * A[(i+1)%6]) % 7] += dp1[i][j]
            dp2[i][j] += dp1[i][j]
    dp1 = dp2

ans = 0
X = [[0] * 7 for _ in range(6)]
for i in range(6):
    for j in range(7):
        ans += dp1[i][j] * j

print(ans)