#line 1 "main.cpp"
#line 1 "main.cpp"
#include<bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include <debug.hpp>
#define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#define debug(...) (static_cast<void>(0))
#endif
//#pragma GCC target("avx,avx2")
//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pll = pair<ll,ll>;
using pii = pair<int,int>;
using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vvvl = vector<vvl>;
using vul = vector<ull>;
using vpii = vector<pii>;
using vvpii = vector<vpii>;
using vpll = vector<pll>;
using vs = vector<string>;
template<class T> using pq = priority_queue<T,vector<T>, greater<T>>;
#define overload4(_1, _2, _3, _4, name, ...) name
#define overload3(a,b,c,name,...) name
#define rep1(n) for (ll UNUSED_NUMBER = 0; UNUSED_NUMBER < (n); ++UNUSED_NUMBER)
#define rep2(i, n) for (ll i = 0; i < (n); ++i)
#define rep3(i, a, b) for (ll i = (a); i < (b); ++i)
#define rep4(i, a, b, c) for (ll i = (a); i < (b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define rrep1(n) for(ll i = (n) - 1;i >= 0;i--)
#define rrep2(i,n) for(ll i = (n) - 1;i >= 0;i--)
#define rrep3(i,a,b) for(ll i = (b) - 1;i >= (a);i--)
#define rrep4(i,a,b,c) for(ll i = (a) + (((b)-(a)-1) / (c) - (((b)-(a)-1) % (c) && (((b)-(a)-1) ^ c) < 0)) * (c);i >= (a);i -= c)
#define rrep(...) overload4(__VA_ARGS__, rrep4, rrep3, rrep2, rrep1)(__VA_ARGS__)
#define all1(i) begin(i) , end(i)
#define all2(i,a) begin(i) , begin(i) + a
#define all3(i,a,b) begin(i) + a , begin(i) + b
#define all(...) overload3(__VA_ARGS__, all3, all2, all1)(__VA_ARGS__)
#define sum(...) accumulate(all(__VA_ARGS__),0LL)
template<class T> bool chmin(T &a, const T &b){ if(a > b){ a = b; return 1; } else return 0; }
template<class T> bool chmax(T &a, const T &b){ if(a < b){ a = b; return 1; } else return 0; }
template<class T> auto min(const T& a){return *min_element(all(a));}
template<class T> auto max(const T& a){return *max_element(all(a));}
template<class... Ts> void in(Ts&... t);
#define INT(...) int __VA_ARGS__; in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__; in(__VA_ARGS__)
#define STR(...) string __VA_ARGS__; in(__VA_ARGS__)
#define CHR(...) char __VA_ARGS__; in(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__; in(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__; in(__VA_ARGS__)
#define VEC(type, name, size) vector<type> name(size); in(name)
#define VV(type, name, h, w) vector<vector<type>> name(h, vector<type>(w)); in(name)
ll intpow(ll a, ll b){ll ans = 1; while(b){if(b & 1) ans *= a; a *= a; b /= 2;} return ans;}
ll modpow(ll a, ll b, ll p){ ll ans = 1; a %= p;if(a < 0) a += p;while(b){ if(b & 1) (ans *= a) %= p; (a *= a) %= p; b /= 2; } return ans; }
bool is_clamp(ll val,ll low,ll high) {return low <= val && val < high;}
void Yes() {cout << "Yes\n";return;}
void No() {cout << "No\n";return;}
void YES() {cout << "YES\n";return;}
void NO() {cout << "NO\n";return;}
template <typename U,typename T>
U floor(U a, T b) {return a / b - (a % b && (a ^ b) < 0);}
template <typename U,typename T>
U ceil(U x, T y) {return floor(x + y - 1, y);}
template <typename U,typename T>
T bmod(U x, T y) {return x - y * floor(x, y);}
template <typename U,typename T>
pair<U, T> divmod(U x, T y) {U q = floor(x, y);return {q, x - q * y};}
namespace IO{
#define VOID(a) decltype(void(a))
struct setting{ setting(){cin.tie(nullptr); ios::sync_with_stdio(false);fixed(cout); cout.precision(15);}} setting;
template<int I> struct P : P<I-1>{};
template<> struct P<0>{};
template<class T> void i(T& t){ i(t, P<3>{}); }
void i(vector<bool>::reference t, P<3>){ int a; i(a); t = a; }
template<class T> auto i(T& t, P<2>) -> VOID(cin >> t){ cin >> t; }
template<class T> auto i(T& t, P<1>) -> VOID(begin(t)){ for(auto&& x : t) i(x); }
template<class T, size_t... idx> void ituple(T& t, index_sequence<idx...>){in(get<idx>(t)...);}
template<class T> auto i(T& t, P<0>) -> VOID(tuple_size<T>{}){ituple(t, make_index_sequence<tuple_size<T>::value>{});} 
#undef VOID
}
#define unpack(a) (void)initializer_list<int>{(a, 0)...}
template<class... Ts> void in(Ts&... t){ unpack(IO :: i(t)); }
#undef unpack
constexpr long double PI = 3.141592653589793238462643383279L;
template <class F> struct REC {
    F f;
    REC(F &&f_) : f(forward<F>(f_)) {}
    template <class... Args> auto operator()(Args &&...args) const { return f(*this, forward<Args>(args)...); }};

constexpr int mod = 998244353;
//constexpr int mod = 1000000007;
#line 2 "library/graph/graph-template.hpp"
template <typename T> 
struct Edge {
	int from, to;
	T cost;
	Edge() = default;
	Edge(int _to, T _cost) : from(-1), to(_to), cost(_cost) {}
	Edge(int _from, int _to, T _cost) : from(_from), to(_to), cost(_cost) {}
	bool operator < (const Edge &a) const { return cost < a.cost; }
	bool operator > (const Edge &a) const { return cost > a.cost; }
    Edge &operator = (const int &x) {
        to = x;
        return *this;
    }
    operator int() const { return to; }
    friend ostream operator<<(ostream &os, Edge &edge) { return os << edge.to; }
};
 
template <typename T>
using Edges = vector<Edge<T>>;
template <typename T>
using Wgraph = vector<Edges<T>>;
using Ugraph = vector<vector<int>>;
Ugraph uinput(int N, int M = -1, bool is_directed = false, int origin = 1) {
    Ugraph g(N);
    if (M == -1) M = N - 1;
    while(M--) {
        int a,b;
        cin >> a >> b;
        a -= origin, b -= origin;
        g[a].push_back(b);
        if(!is_directed) g[b].push_back(a);
    }
    return g;
}
template <typename T>
Wgraph<T> winput(int N, int M = -1, bool is_directed = false,int origin = 1) {
    Wgraph<T> g(N);
    if (M == -1) M = N - 1;
    while(M--) {
        int a,b;
        T c;
        cin >> a >> b >> c;
        a -= origin, b -= origin;
        g[a].emplace_back(b,c);
        if(!is_directed) g[b].emplace_back(a,c);
    }
    return g;
}
#line 3 "library/tree/HLD.hpp"
template <typename G = vector<vector<int>>>
struct HLD {
    private:
    void dfs_sz(int cur) {
        size[cur] = 1;
        for (auto &dst:g[cur]) {
            if (dst == par[cur]) {
                if (g[cur].size() >= 2 && int(dst) == int(g[cur][0]))
                swap(g[cur][0],g[cur][1]);
                else continue;
            }
            depth[dst] = depth[cur] + 1;
            par[dst] = cur;
            dfs_sz(dst);
            size[cur] += size[dst];
            if (size[dst] > size[g[cur][0]]) {
                swap(dst,g[cur][0]);
            }
        }
    }
    void dfs_hld(int cur) {
        ord[id] = cur;
        down[cur] = id++;
        for (auto dst:g[cur]) {
        if (dst == par[cur]) continue;
            nxt[dst] = (int(dst) == int(g[cur][0]) ? nxt[cur] : int(dst));
            dfs_hld(dst);
        }
        up[cur] = id;
    }
    public:
  // [u, v)
    vector<pair<int,int>> ascend(int u,int v) const {
        vector<pair<int,int>> res;
        while (nxt[u] != nxt[v]) {
            res.emplace_back(down[u],down[nxt[u]]);
            u = par[nxt[u]];
        }
        if (u != v) res.emplace_back(down[u],down[v] + 1);
        return res;
    }
  // (u, v]
    vector<pair<int,int>> descend(int u,int v) const {
        if (u == v) return {};
        if (nxt[u] == nxt[v]) return {{down[u] + 1,down[v]}};
        auto res = descend(u,par[nxt[v]]);
        res.emplace_back(down[nxt[v]],down[v]);
        return res;
    }
    G g;
    int id;
    vector<int> size,depth,down,up,ord,nxt,par;
    HLD() = default;
    HLD(G& _g,int root = 0)
        : g(_g),
            id(0),
            size(g.size(),0),
            depth(g.size(),0),
            down(g.size(),-1),
            up(g.size(),-1),
            ord(g.size(),0),
            nxt(g.size(),root),
            par(g.size(),-1) {
        dfs_sz(root);
        dfs_hld(root);
    }
    void build(int root) {
        dfs_sz(root);
        dfs_hld(root);
    }
    pair<int,int> idx(int i) const {return make_pair(down[i], up[i]);}
    template <typename F>
    void path_query(int u,int v,bool vertex,const F& f) {
        int l = lca(u,v);
        for (auto &&[a,b] : ascend(u,l)) {
            int s = a + 1, t = b;
            s > t ? f(t,s) : f(s,t);
        }
        if (vertex) f(down[l], down[l] + 1);
        for (auto &&[a,b] : descend(l,v)) {
            int s = a,t = b + 1;
            s > t ? f(t,s) : f(s,t);
        }
    }
    template <typename F>
    void path_noncommutative_query(int u,int v,bool vertex,const F& f) {
        int l = lca(u,v);
        for(auto &&[a,b]:ascend(u,l)) f(a + 1,b);
        if(vertex) f(down[l],down[l] + 1);
        for(auto &&[a,b]:descend(l,v)) f(a,b + 1);
    }
    template <typename F>
    void subtree_query(int u,bool vertex,const F& f) {
        f(down[u] + int(!vertex), up[u]);
    }
    int lca(int a,int b) const {
        while (nxt[a] != nxt[b]) {
            if (down[a] < down[b]) swap(a, b);
            a = par[nxt[a]];
        }
        return depth[a] < depth[b] ? a : b;
    }
    int dist(int a,int b) const {return depth[a] + depth[b] - depth[lca(a, b)] * 2;}
    int kth_ancestor(int u,int k) const {
        if(k < 0) return -1;
        while(u >= 0) {
            int h = nxt[u];
            if(down[u] - k >= down[h]) return ord[down[u] - k];
            k -= down[u] - down[h] + 1;
            u = par[h];
        }
        return -1;
    }
    int next(int s,int t) const {
        assert(s != t && 0 <= s && s < g.size() && 0 <= t && t < g.size());
        if(depth[s] >= depth[t]) return par[s];
        int u = kth_ancestor(t,depth[t] - depth[s] - 1);
        return par[u] == s ? u : par[s];
    }
    // s - t 間のパス上の頂点のうち s から距離 i の頂点
    // (dist(s, t) < i のとき -1)
    int jump(int s,int t,int d) const {
        int lc = lca(s,t);
        int d1 = depth[s] - depth[lc];
        if(d <= d1) return kth_ancestor(s,d);
        int d2 = d1 + depth[t] - depth[lc];
        if(d <= d2) return kth_ancestor(t,d2 - d);
        return -1;
    }
    vector<int> path(int s,int t) const {
        vector<int> pre,suf;
        while (depth[s] > depth[t]) {
            pre.emplace_back(s);
            s = par[s];
        }
        while (depth[s] < depth[t]) {
            suf.emplace_back(t);
            t = par[t];
        }
        while(s != t) {
            pre.emplace_back(s);
            suf.emplace_back(t);
            s = par[s];
            t = par[t];
        }
        pre.push_back(s);
        reverse(begin(suf), end(suf));
        copy(begin(suf), end(suf), back_inserter(pre));
        return pre;
    }
};
#line 2 "library/segtree/segtree.hpp"
template <typename T, typename OP>
struct segtree {
    int N;
    int size;
    vector<T> seg;
    const OP op;
    const T I;
    segtree(OP _op, const T I_) : N(0), size(0), op(_op), I(I_) {}
    explicit segtree(int _N, const OP _op, const T I_) : op(_op), I(I_) { init(_N); }
    explicit segtree(const vector<T> &v, const OP _op, const T I_) : op(_op), I(I_) {
        init(v.size());
        for (int i = 0; i < (int)v.size(); i++) {
            seg[i + size] = v[i];
        }
        build();
    }
    void init(int _N) {
        N = _N;
        size = 1;
        while (size < N) size <<= 1;
        seg.assign(2 * size, I);
    }
    void build() {
        for (int k = size - 1; k > 0; k--) {
            seg[k] = op(seg[2 * k], seg[2 * k + 1]);
        }
    }
    void set(int p, T x) {
        assert(0 <= p && p < N);
        p += size;
        seg[p] = x;
        while (p >>= 1) {
            seg[p] = op(seg[2 * p], seg[2 * p + 1]);
        }
    }
    void add(int p, T x) {
        assert(0 <= p && p < N);
        p += size;
        seg[p] += x;
        while (p >>= 1) {
            seg[p] = op(seg[2 * p], seg[2 * p + 1]);
        }
    }
    T get(int p) const {
        assert(0 <= p && p < N);
        return seg[p + size];
    }
    // query to [l, r)
    T prod(int l, int r) {
        assert(0 <= l && l <= r && r <= N);
        T L = I, R = I;
        for (l += size, r += size; l < r; l >>= 1, r >>= 1) {
            if (l & 1) L = op(L, seg[l++]);
            if (r & 1) R = op(seg[--r], R);
        }
        return op(L, R);
    }
    T all_prod() {return seg[1];}
    // check(a[l] * ...  * a[r-1]) が true となる最大の r
    // (右端まですべて true なら N を返す)
    template <class C>
    int max_right(int l, C check) {
        assert(0 <= l && l <= N);
        assert(check(I) == true);
        if (l == N) return N;
        l += size;
        T sm = I;
        do {
            while (l % 2 == 0) l >>= 1;
            if (!check(op(sm, seg[l]))) {
                while (l < size) {
                    l = (2 * l);
                    if (check(op(sm, seg[l]))) {
                        sm = op(sm, seg[l]);
                        l++;
                    }
                }
                return l - size;
            }
            sm = op(sm, seg[l]);
            l++;
        } while ((l & -l) != l);
        return N;
    }
    // check(a[l] * ... * a[r-1]) が true となる最小の l
    // (左端まで true なら 0 を返す)
    template <typename C>
    int min_left(int r, C check) {
        assert(0 <= r && r <= N);
        assert(check(I) == true);
        if (r == 0) return 0;
        r += size;
        T sm = I;
        do {
            r--;
            while (r > 1 && (r % 2)) r >>= 1;
            if (!check(op(seg[r], sm))) {
                while (r < size) {
                    r = (2 * r + 1);
                    if (check(op(seg[r], sm))) {
                        sm = op(seg[r], sm);
                        r--;
                    }
                }
                return r + 1 - size;
            }
            sm = op(seg[r], sm);
        } while ((r & -r) != r);
        return 0;
    }
};
#line 101 "main.cpp"
using T = int;
T op(T x,T y) {return min(x,y);}
T e() {return 1e9;}
void solve() {
    INT(n,m);
    vi U(n-1),V(n-1);
    vvi g(n);
    rep(i,n-1) {
        INT(u,v);
        u--,v--;
        U[i] = u,V[i] = v;
        g[u].emplace_back(v);
        g[v].emplace_back(u);
    }
    HLD<vvi> hld(g);
    vi init(n,1e9);
    rep(i,n-1) {
        int x = (hld.depth[U[i]] > hld.depth[V[i]] ? U[i] : V[i]);
        init[hld.idx(x).first] = i;
    }
    segtree<int,decltype(&op)> seg(init,op,e());
    int val;
    auto f = [&](int u,int v) {
        chmin(val,seg.prod(u,v));
    };
    vi cnt(n);
    rep(i,m) {
        INT(u,v);
        u--,v--;
        val = 1e9;
        hld.path_query(u,v,false,f);
        cnt[0]++;
        cnt[val]--;
    }
    rep(i,1,n) cnt[i] += cnt[i-1];
    rep(i,n-1) cout << cnt[i] << '\n';
}    



int main() {
    //INT(TT);
    int TT = 1;
    rep(i,TT) solve();
}