A = int(input())
B = int(input())
C = int(input())
D = int(input())
E = int(input())

d = 10
ans = 0
if A % 10 == 0:
    ans += A
else:
    ans += (A//10+1)*10
    d = min(A - A//10*10, d)

if B % 10 == 0:
    ans += B
else:
    ans += (B//10+1)*10
    d = min(B - B//10*10, d)

if C % 10 == 0:
    ans += C
else:
    ans += (C//10+1)*10
    d = min(C - C//10*10, d)

if D % 10 == 0:
    ans += D
else:
    ans += (D//10+1)*10
    d = min(D - d//10*10, d)
    
if E % 10 == 0:
    ans += E
else:
    ans += (E//10+1)*10
    d = min(E - E//10*10, d)

if d != 10:
    ans -= 10 - d
    
print(ans)