import sys
data = sys.argv[1] if len(sys.argv) > 1 else "../day7data.txt"
X = [int(x) for x in open(data).read().strip().split(",")]
X.sort()
T = X[len(X) // 2]
ans = 0
def C2(d):
return d * (d + 1) / 2
best = 1e9
for med in range(2000):
score = 0
for x in X:
d = abs(x - med)
score += C2(d)
if score < best:
best = score
print(best)
