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p.cpp
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#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int mod = 1e9 + 7;
ll int INF = 1e17;
vector <int> adj[100005];
ll int dp[100005][2];
ll int dfs(int node, int pn, int colour)
{
if(dp[node][colour] != -1)
return dp[node][colour];
dp[node][colour] = 1;
for(int i=0;i<adj[node].size();i++)
if(adj[node][i] != pn)
{
if(colour)
{
dp[node][colour] = (dp[node][colour] * dfs(adj[node][i], node, 1-colour)) % mod;
}
else
{
ll int res = (dfs(adj[node][i], node, colour) + dfs(adj[node][i], node, 1-colour)) % mod;
dp[node][colour] = (dp[node][colour] * res) % mod;
}
}
return dp[node][colour] % mod;
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
memset(dp, -1, sizeof dp);
int n, x, y;
cin>>n;
for(int i=0;i<n-1;i++)
{
cin>>x>>y;
adj[x].push_back(y);
adj[y].push_back(x);
}
cout<<(dfs(1, -1, 0) + dfs(1, -1, 1)) % mod <<endl;
return 0;
}