blob: 6a5f849600e866fa1a197e99689dd22e6524b3ce (
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f = open('3.in', 'r')
o = open('3.out', 'w')
T = int(f.readline().strip())
for t in xrange(T):
N = int(f.readline().strip())
w = [map(int, f.readline().strip().split(' ')) for _n in range(N)]
w.sort(key=lambda wire: wire[0])
cross = 0
for i in range(N):
for j in range(i+1, N):
if w[i][1] > w[j][1]:
cross += 1
s = "Case #%d: %s\n" % (t+1, cross)
print s
o.write(s)
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