import sys from itertools import permutations import heapq input = lambda :sys.stdin.readline().rstrip() mi = lambda :map(int,input().split()) li = lambda :list(mi()) N = int(input()) edge = [[] for v in range(N)] for _ in range(N-1): u,v = mi() edge[u-1].append(v-1) edge[v-1].append(u-1) for v in range(N): res = 0 for nv in edge[v]: res += len(edge[nv]) - 1 print(res)