import sequtils,strutils,math
let V = stdin.readline.split.map(parseInt)
var ans = int.high

for a in 1..30:
    for b in 1..<a:
        for c in 1..<b:
            var
                cnt = 0
                flag : int
            for v in V:
                var cnta = int.high
                for i in 0..30:
                    if v < i * c:
                        break
                    for j in 0..30:
                        if v < i * c + j * b:
                            break
                        for k in 0..30:
                            if v == i * c + j * b + k * a:
                                cnta = min(cnta,i + j + k)
                                
                            elif v < i * c + j * b + k * a:
                                break
                if cnta < 100000:
                    flag += 1
                    cnt += cnta
            if flag == 4:
                ans = min(ans,cnt)
echo ans