import sys
sum = 0
s = []
for _ in range(9):
a = int(sys.stdin.readline())
s.append(a)
sum += a
s.sort()
# 2개를 빼서 비교
for i in range(9):
for j in range(9):
b = s[i] + s[j]
if sum - b == 100:
s.remove(s[i])
s.remove(s[j-1])
for k in range(7):
if k != i and k != j:
print(s[k])
sys.exit()
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