Jakkara

a,b,c,d=[int(i) for i  in raw_input().split()]

def chg(v):
    return abs(a-v)+abs(b-v)+abs(c-v)+abs(d-v)

mn = a
mx = a
if (b < mn): mn = b
if (c < mn): mn = c
if (d < mn): mn = d
if (b > mx): mx = b
if (c > mx): mx = c
if (d > mx): mx = d

if (mn == mx):
    print 0
    exit()

res = chg(mn)
tmp = 0
pres_up = -1
pres_down = -1

up = (mx+mn)/2
down = (mx+mn)/2-1

while True:
    if up == -1 and down == -1:
        break
    if up != -1:
        tmp = chg(up)
        if (tmp >= pres_up and pres_up != -1):
            up = -1
        else:
            pres_up = tmp
            if tmp < res:
                res = tmp
            up += 1
            if up > mx:
                up = -1
    if down != -1:
        tmp = chg(down)
        if (tmp >= pres_down and pres_down != -1):
            down = -1
        else:
            pres_down = tmp
            if tmp < res:
                res = tmp
            down += 1
            if down > mx:
                down = -1

print res

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: WRONG ANSWER

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: ACCEPTED