from math import fabs
vara, varb, varc, vard = raw_input("Enter each number: ").split()
print vara, varb, varc, vard
highest = int(vara)
ent1 = int(varb)
ent2 = int(varc)
ent3 = int(vard)
total = ((ent1 + (highest * 2)) + (ent2 + fabs((ent2 - highest))) + (ent3 + (fabs(ent3 - highest))))
print total
ZnJvbSBtYXRoIGltcG9ydCBmYWJzCnZhcmEsIHZhcmIsIHZhcmMsIHZhcmQgPSByYXdfaW5wdXQoIkVudGVyIGVhY2ggbnVtYmVyOiAiKS5zcGxpdCgpCnByaW50IHZhcmEsIHZhcmIsIHZhcmMsIHZhcmQKaGlnaGVzdCA9IGludCh2YXJhKQplbnQxID0gaW50KHZhcmIpCmVudDIgPSBpbnQodmFyYykKZW50MyA9IGludCh2YXJkKQoKdG90YWwgPSAoKGVudDEgKyAoaGlnaGVzdCAqIDIpKSArIChlbnQyICsgZmFicygoZW50MiAtIGhpZ2hlc3QpKSkgKyAoZW50MyArIChmYWJzKGVudDMgLSBoaWdoZXN0KSkpKQpwcmludCB0b3RhbA==