#include <bits/stdc++.h>
using namespace std;

#define endl '\n'
#define fi first
#define se second
#define For(i, l, r) for (auto i = (l); i < (r); i++)
#define ForE(i, l, r) for (auto i = (l); i <= (r); i++)
#define FordE(i, l, r) for (auto i = (l); i >= (r); i--)
#define Fora(v, a) for (auto v: (a))
#define bend(a) (a).begin(), (a).end()
#define isz(a) ((signed)(a).size())

using ll = long long;
using ld = long double;
using pii = pair <int, int>;
using vi = vector <int>;
using vpii = vector <pii>;
using vvi = vector <vi>;

const int N = 1e5 + 5;

struct disjoint_set_union{
	int par[N];

	void reset(int sz = N){
		fill(par, par + sz, -1);
	}

	int root(int x){
		return par[x] < 0 ? x : (par[x] = root(par[x]));
	}

	bool merge(int x, int y){
		if ((x = root(x)) == (y = root(y))){
			return false;
		}
		if (par[x] > par[y]){
			swap(x, y);
		}
		par[x] += par[y];
		par[y] = x;
		return true;
	}
} dsu;

struct counter{
	int cnt[N];
	int cnt_cnt[N];
	int ans;

	void insert(int x){
		cnt_cnt[cnt[x]]--;
		cnt[x]++;
		cnt_cnt[cnt[x]]++;
		if (ans < cnt[x]){
			ans = cnt[x];
		}
	}

	void erase(int x){
		cnt_cnt[cnt[x]]--;
		cnt[x]--;
		cnt_cnt[cnt[x]]++;
		if (cnt_cnt[ans] == 0){
			ans--;
		}
	}
} DS, DSout, DSin;

struct edge{
	int u, v;
};

int n, m;
int color[N];
edge a[N];
vector <int> adj[N];

int ctrtime, time_in[N], low[N];
bool bridge[N];

void dfs_time(int u, int ip = -1){
	time_in[u] = ++ctrtime;
	low[u] = time_in[u];
	for (auto i: adj[u]){
		if (i == ip){
			continue;
		}
		int v = u ^ a[i].u ^ a[i].v;
		if (time_in[v] == 0){
			dfs_time(v, i);
			low[u] = min(low[u], low[v]);
		}
		else{
			low[u] = min(low[u], time_in[v]);
		}
	}
	if (low[u] == time_in[u] and ip != -1){
		bridge[ip] = true;
	}
}

int cnt_cpn;
int to_cpn[N];
vector <int> cpn_color[N];

int cnt_edge;
edge a2[N];
vector <int> adj2[N];
vector <int> sources;
int sz[N];
int ctrtour, tour[N], tin[N], tout[N];

void dfs_tour(int u, int ip = -1){
	tour[++ctrtour] = u;
	tin[u] = ctrtour;
	sz[u] = (int)cpn_color[u].size();
	for (auto i: adj2[u]){
		if (i == ip){
			continue;
		}
		int v = u ^ a2[i].u ^ a2[i].v;
		dfs_tour(v, i);
		sz[u] += sz[v];
	}
	tout[u] = ctrtour;
}

int ans[N];

void dfs_component(int u, int delta, counter& DS, int ip = -1){
	if (delta == 1){
		for (auto col: cpn_color[u]){
			DS.insert(col);
		}
	}
	else{
		for (auto col: cpn_color[u]){
			DS.erase(col);
		}
	}
	for (auto i: adj2[u]){
		if (i == ip){
			continue;
		}
		int v = u ^ a2[i].u ^ a2[i].v;
		dfs_component(v, delta, DS, i);
	}
}

void dfs_mergeset(int u, int ip = -1, bool keep = false){
	int heavy = -1;
	for (auto i: adj2[u]){
		if (i == ip){
			continue;
		}
		int v = u ^ a2[i].u ^ a2[i].v;
		if (heavy == -1 or sz[v] > sz[heavy]){
			heavy = v;
		}
	}
	for (auto i: adj2[u]){
		if (i == ip){
			continue;
		}
		int v = u ^ a2[i].u ^ a2[i].v;
		if (v != heavy){
			dfs_mergeset(v, i);
		}
	}
	for (auto i: adj2[u]){
		if (i == ip){
			continue;
		}
		int v = u ^ a2[i].u ^ a2[i].v;
		if (v == heavy){
			dfs_mergeset(v, i, true);
		}
	}
	for (auto col: cpn_color[u]){
		DSout.erase(col);
		DSin.insert(col);
	}
	for (auto i: adj2[u]){
		if (i == ip){
			continue;
		}
		int v = u ^ a2[i].u ^ a2[i].v;
		if (v != heavy){
			for (int t = tin[v]; t <= tout[v]; t++){
				int node = tour[t];
				for (auto col: cpn_color[node]){
					DSout.erase(col);
					DSin.insert(col);
				}
			}
		}
	}
	if (ip != -1){
		ans[ip] = ans[ip] - DS.ans + DSout.ans + DSin.ans;
	}
	if (not keep){
		for (int t = tin[u]; t <= tout[u]; t++){
			int node = tour[t];
			for (auto col: cpn_color[node]){
				DSin.erase(col);
				DSout.insert(col);
			}
		}
	}
}

signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	// freopen("KEK.inp", "r", stdin);
	// freopen("KEK.out", "w", stdout);
int tests; cin >> tests; while (tests--){
	cin >> n >> m;
	ForE(u, 1, n){
		cin >> color[u];
	}
	ForE(u, 1, n){
		adj[u].clear();
	}
	ForE(i, 1, m){
		int u, v;
		cin >> u >> v;
		a[i] = edge{u, v};
		adj[u].emplace_back(i);
		adj[v].emplace_back(i);
	}

	ctrtime = 0;
	ForE(u, 1, n){
		tin[u] = 0;
		low[u] = 0;
		bridge[u] = false;
	}
	ForE(u, 1, n){
		if (tin[u] == 0){
			dfs_time(u);
		}
	}

	dsu.reset(n + 1);
	cnt_cpn = 0;
	ForE(i, 1, m){
		if (not bridge[i]){
			dsu.merge(a[i].u, a[i].v);
		}
	}
	ForE(u, 1, n){
		if (dsu.root(u) == u){
			to_cpn[u] = ++cnt_cpn;
		}
	}
	cnt_edge = 0;
	ForE(x, 1, cnt_cpn){
		cpn_color[x].clear();
		adj2[x].clear();
	}
	ForE(u, 1, n){
		to_cpn[u] = to_cpn[dsu.root(u)];
		cpn_color[to_cpn[u]].emplace_back(color[u]);
	}
	ForE(i, 1, m){
		if (bridge[i]){
			int x = to_cpn[a[i].u], y = to_cpn[a[i].v];
			a2[++cnt_edge] = edge{x, y};
			adj2[x].emplace_back(cnt_edge);
			adj2[y].emplace_back(cnt_edge);
		}
	}

	sources.clear();
	ctrtour = 0;
	ForE(x, 1, cnt_cpn){
		tour[x] = 0;
		tin[x] = 0;
		tout[x] = 0;
	}
	ForE(x, 1, cnt_cpn){
		if (tin[x] == 0){
			sources.emplace_back(x);
			dfs_tour(x);
		}
	}

	ans[1] = 0;
	for (auto x: sources){
		dfs_component(x, 1, DS);
		ans[1] += DS.ans;
		dfs_component(x, -1, DS);
	}
	ForE(i, 2, m){
		ans[i] = ans[i - 1];
	}
	for (auto x: sources){
		dfs_component(x, 1, DS);
		dfs_component(x, 1, DSout);
		dfs_tour(x);
		dfs_mergeset(x);
		dfs_component(x, -1, DS);
		dfs_component(x, -1, DSout);
	}
	ForE(i, 1, m){
		cout << ans[i] << " \n"[i == m];
	}
}
}

/*
==================================================+
INPUT                                             |
--------------------------------------------------|

--------------------------------------------------|
==================================================+
OUTPUT                                            |
--------------------------------------------------|

--------------------------------------------------|
==================================================+
*/