n = int(input())
l = list(zip(*(map(int, input().split()) for i in range(n))))
ssq = sum(x*x for t in l for x in t)
sqs = sum(sum(t)**2 for t in l)
print((n * ssq - sqs))1515E - Phoenix and Computers | 1552B - Running for Gold |
994A - Fingerprints | 1221C - Perfect Team |
1709C - Recover an RBS | 378A - Playing with Dice |
248B - Chilly Willy | 1709B - Also Try Minecraft |
1418A - Buying Torches | 131C - The World is a Theatre |
1696A - NIT orz | 1178D - Prime Graph |
1711D - Rain | 534A - Exam |
1472A - Cards for Friends | 315A - Sereja and Bottles |
1697C - awoo's Favorite Problem | 165A - Supercentral Point |
1493A - Anti-knapsack | 1493B - Planet Lapituletti |
747B - Mammoth's Genome Decoding | 1591C - Minimize Distance |
1182B - Plus from Picture | 1674B - Dictionary |
1426C - Increase and Copy | 520C - DNA Alignment |
767A - Snacktower | 1365A - Matrix Game |
714B - Filya and Homework | 31A - Worms Evolution |