import sys
sys.setrecursionlimit(10**8)
input=sys.stdin.readline

def dfs(v,mod):
    nums[v] = 0
    child[v] = 0
    if len(edge[v])==0:
        return
    for u in edge[v]:
        if nums[u] == -1:
            dfs(u,mod)
        nums[v] += nums[u]+child[u]+1
        child[v] += child[u]+1
    nums[v] %= mod
    child[v] %= mod
    return

N = int(input())
mod = 10**9+7
edge = [[] for _ in range(N)]
roots = [True]*N
for _ in range(N-1):
    a,b = map(int, input().split())
    roots[b-1] = False
    edge[a-1].append(b-1)
nums = [-1]*N
child = [-1]*N
for i in range(N):
    if roots[i]==True:
        dfs(i,mod)
        break
ans = sum(nums)
ans %= mod
print(ans)