N,A,B,C = map(int, input().split())
l = [int(i) for i in input()]
INF = 10**9
def dfs(cur,a,b,c):
    if cur == N:
        return abs(a-A) + abs(b-B) + abs(c-C) - 30 if min(a,b,c) > 0 else INF
    ret0 = dfs(cur+1,a,b,c)
    ret1 = dfs(cur+1,a+l[cur],b,c) + 10
    ret2 = dfs(cur + 1, a, b + l[cur], c) + 10
    ret3 = dfs(cur + 1, a, b, c + l[cur]) + 10
    return min(ret0, ret1, ret2, ret3)
print(dfs(0,0,0,0))