import sys
input = sys.stdin.buffer.readline

L = int(input())
M = int(input())
N = int(input())

S = 100 * L + 25 * M + 1 * N

S = S % 1000
L2 = S // 100
S = S % 100
M2 = S // 25
S = S % 100
N2 = S

print(L2 + M2 + N2)