import sequtils,strutils

var
    L = stdin.readline.parseInt
    M = stdin.readline.parseInt
    N = stdin.readline.parseInt
    S = 100 * L + 25 * M + N
    cnt = 0
S = S mod 1000
cnt += S div 100
S = S mod 100
cnt += S div 25
S = S mod 25
cnt += S
echo cnt