func_code_string: #include <bits/stdc++.h>   using namespace std;   void err(istream_iterator<string> it) {}   template <typename T, typename... Args>   void err(istream_iterator<string> it, T a, Args... args) {     cerr << *it <<   =   << a <<   n ;     err(++it, args...);   }   long long powMod(long long x, long long y) {     long long p = 1;     while (y) {       if (y % 2) {         p = (p * (x % ((long long)1e9 + 7))) % ((long long)1e9 + 7);       }       y /= 2;       x = ((x % ((long long)1e9 + 7)) * (x % ((long long)1e9 + 7))) %           ((long long)1e9 + 7);     }     return p;   }   long long CpowMod(long long x, long long y, long long w) {     long long p = 1;     while (y) {       if (y % 2) {         p = (p * (x % w)) % w;       }       y /= 2;       x = ((x % w) * (x % w)) % w;     }     return p;   }   long long invMod(long long x) { return powMod(x, ((long long)1e9 + 7) - 2); }   long long CinvMod(long long x, long long w) { return CpowMod(x, w - 2, w); }   long long gcd(long long a, long long b) { return b == 0 ? a : gcd(b, a % b); }   long long totLeaf;   vector<set<long long> > edges;   long long bud = -1;   long long n;   void removeEdge(long long x, long long y) {     {};     edges[x].erase(y);   }   void dfs(long long node, long long par) {     for (auto &it : edges[node]) {       if (it != par) {         dfs(it, node);       }     }     long long cnt = 0;     for (auto &it : edges[node]) {       if (it == par || edges[it].count(node) == 0) {         continue;       }       cnt++;     }     if (cnt) {       totLeaf += cnt;       bud++;       removeEdge(node, par);     }   }   void solve() {     long long T;     cin >> T;     while (T--) {       totLeaf = 0;       bud = -1;       cin >> n;       edges = vector<set<long long> >(n + 1);       for (long long i = 0; i <= n - 2; i++) {         long long x, y;         cin >> x >> y;         edges[x].insert(y);         edges[y].insert(x);       }       dfs(1, 0);       cout << totLeaf - (bud) <<   n ;     }   }   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     cout.precision(10);     solve();     return 0;   }   