import math
T = [int(input()) for i in range(5)]
print(T)
Rest=[0]*5
for i in range(5):
    if T[i]%10 == 0:
        Rest[i] = 10
    else: Rest[i] = T[i]%10
maxrest = 10-min(Rest)
ans = 0
for i in range(5):
    ans += 10*math.ceil(T[i]/10)
print(ans-maxrest)