Kertoma

f = [0] * 100001

def fact(x):
    f[0] = 1
    i = x
    while f[i] == 0:
       i -= 1
    for j in range(i + 1, x + 1):
        f[j] = f[j - 1] * j

def lenn(x):
    fact(x)
    ans = len(str(f[x]))
    return ans

a = list(map(int, input().split()))
dig = sum(a)
summi = 0
for i in range(10):
    summi += (a[i] * i)
L = 1
R = 10000
while R - L > 1:
    M = (L + R) // 2
    if (lenn(M) < dig):
        L = M
    else:
        R = M

if R == 5 or R == 6:
    if summi == 3:
        print(5)
    else:
        print(6)
elif R == 2 or R == 3:
    if summi == 2:
        print(2)
    else:
        print(3)
else:
    print(R)

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

Test 7

Group: 2, 3

Verdict: ACCEPTED

Test 8

Group: 2, 3

Verdict: ACCEPTED

Test 9

Group: 2, 3

Verdict: ACCEPTED

Test 10

Group: 2, 3

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: WRONG ANSWER

Test 14

Group: 3

Verdict: WRONG ANSWER

Test 15

Group: 3

Verdict: WRONG ANSWER

Test 16

Group: 3

Verdict: WRONG ANSWER