t = int(input())
for i in range(t):
    l, r = map(int, input().split())
    if l * 2 > r:
        print(-1, -1)
    else:
        print(l, l * 2)

for _ in range(int(input())):
	n, k, z = map(int, input().split())
	a = [int(x) for x in input().split()]
	ans = 0
	s = 0
	mx = 0
	for t in range(z + 1):
		pos = k - 2 * t
		if pos < 0:
			continue
		mx = 0
		s = 0
		for i in range(pos + 1):
			if i < n - 1:
				mx = max(mx, a[i] + a[i + 1])
			s += a[i]
		ans = max(ans, s + mx * t)
	print(ans)

for _ in range(int(input())):
	n, k, z = map(int, input().split())
	a = [int(x) for x in input().split()]
	ans = 0
	s = 0
	mx = 0
	for i in range(k + 1):
		if i < n - 1:
			mx = max(mx, a[i] + a[i + 1])
		s += a[i]
		if i % 2 == k % 2:
			tmp = (k - i) // 2
			if tmp <= z:
				ans = max(ans, s + mx * tmp)
	print(ans)

#include <bits/stdc++.h>

using namespace std;

#define sz(a) int((a).size())
#define forn(i, n) for (int i = 0; i < int(n); ++i)

int solve(const string& s, int x, int y) {
	int res = 0;
	for (auto c : s) if (c - '0' == x) {
		++res;
		swap(x, y);
	}
	if (x != y && res % 2 == 1)
		--res;
	return res;
}

void solve() {
	string s;
	cin >> s;
	int ans = 0;
	forn(x, 10) forn(y, 10)
		ans = max(ans, solve(s, x, y));
	cout << sz(s) - ans << endl;
}

int main() {
	int T;
	cin >> T;
	while (T--) solve();
}

import kotlin.math.*

fun main() {
    repeat(readLine()!!.toInt()) {
        val (n, k) = readLine()!!.split(' ').map { it.toLong() }
        val (l1, r1) = readLine()!!.split(' ').map { it.toLong() }
        val (l2, r2) = readLine()!!.split(' ').map { it.toLong() }

        var ans = 1e18.toLong()
        if (max(l1, l2) <= min(r1, r2)) {
            val rem = max(0L, k - n * (min(r1, r2) - max(l1, l2)))
            val maxPossible = n * (abs(l1 - l2) + abs(r1 - r2))
            ans = min(rem, maxPossible) + max(0L, rem - maxPossible) * 2
        } else {
            val invest = max(l1, l2) - min(r1, r2)
            for (cntInv in 1..n) {
                var curAns = invest * cntInv
                val maxPossible = (max(r1, r2) - min(l1, l2)) * cntInv
                curAns += min(k, maxPossible) + max(0L, k - maxPossible) * 2
                ans = min(ans, curAns)
            }
        }
        println(ans)
    }
}

fun gcd(a: Long, b: Long): Long {
	if (a == 0L) return b
	return gcd(b % a, a)
}

fun main() {
	repeat(readLine()!!.toInt()) {
		val (m, d, w) = readLine()!!.split(' ').map { it.toLong() }
		val w2 = w / gcd(d - 1, w)
		val mn = minOf(m, d)
		var cnt = mn / w2
		println((2 * (mn - w2) - w2 * (cnt - 1)) * cnt / 2)
	}
}

#include <bits/stdc++.h>

using namespace std;

#define x first
#define y second
#define pb push_back
#define mp make_pair
#define all(a) (a).begin(), (a).end()
#define forn(i, n) for (int i = 0; i < int(n); ++i)

typedef pair<int, int> pt;

const int N = 200 * 1000;

int n;
int l[N], r[N], t[N];
set<pt> st[2];

int main() {
	scanf("%d", &n);
	forn(i, n) scanf("%d%d%d", &l[i], &r[i], &t[i]), --t[i];
	
	vector<pair<int, pt>> ev;
	forn(i, n) {
		ev.pb(mp(l[i], mp(0, i)));
		ev.pb(mp(r[i], mp(1, i)));
	}

	sort(all(ev));
	
	int ans = 0;
	for (auto it : ev) {
		int i = it.y.y;
		if (it.y.x) {
			int j = t[i];
			int k = j ^ 1;
			if (st[j].count(mp(r[i], i)) && !st[k].empty()) {
				++ans;
				st[k].erase(st[k].begin());
			}
			if (st[j].count(mp(r[i], i))) st[t[i]].erase(mp(r[i], i));
		} else {
			st[t[i]].insert(mp(r[i], i));
		}
	}
	
	printf("%d\n", n - ans);
}

#include <bits/stdc++.h>

using namespace std;

#define x first
#define y second
#define pb push_back
#define mp make_pair
#define sz(a) int((a).size())
#define all(a) (a).begin(), (a).end()
#define forn(i, n) for (int i = 0; i < int(n); ++i)

typedef pair<int, int> pt;

const int INF = 1e9;
const int N = 200 * 1000;

int n;
vector<pt> a[2];

struct segtree {
	int n;
	vector<int> t, ps;
	segtree(int n) : n(n) {
		t.resize(4 * n, -INF);
		ps.resize(4 * n, 0);
	}
	
	void push(int v, int l, int r) {
		if (l + 1 != r) {
			ps[v * 2 + 1] += ps[v];
			ps[v * 2 + 2] += ps[v];
		}
		t[v] += ps[v];
		ps[v] = 0;
	}
	
	void upd(int v, int l, int r, int pos, int val) {
		push(v, l, r);
		if (l + 1 == r) {
			t[v] = val;
			return;
		}
		int m = (l + r) >> 1;
		if (pos < m) upd(v * 2 + 1, l, m, pos, val);
		else upd(v * 2 + 2, m, r, pos, val);
		t[v] = max(t[v * 2 + 1], t[v * 2 + 2]);
	}
	
	void add(int v, int l, int r, int L, int R, int val) {
		push(v, l, r);
		if (L >= R) return;
		if (l == L && r == R) {
			ps[v] += val;
			push(v, l, r);
			return;
		}
		int m = (l + r) >> 1;
		add(v * 2 + 1, l, m, L, min(m, R), val);
		add(v * 2 + 2, m, r, max(m, L), R, val);
		t[v] = max(t[v * 2 + 1], t[v * 2 + 2]);
	}
	
	int get(int v, int l, int r, int L, int R) {
		push(v, l, r);
		if (L >= R) return -INF;
		if (l == L && r == R) 
			return t[v];
		int m = (l + r) >> 1;
		int r1 = get(v * 2 + 1, l, m, L, min(m, R));
		int r2 = get(v * 2 + 2, m, r, max(m, L), R);
		t[v] = max(t[v * 2 + 1], t[v * 2 + 2]);
		return max(r1, r2);
	}
	
	void upd(int pos, int val) {
		return upd(0, 0, n, pos, val);
	}
	
	void add(int l, int r, int val) {
		return add(0, 0, n, l, r, val);
	}
	
	int get(int l, int r) {
		return get(0, 0, n, l, r);
	}
};

int main() {
	scanf("%d", &n);
	forn(i, n) {
		int l, r, t;
		scanf("%d%d%d", &l, &r, &t);
		a[t - 1].pb(mp(r, l));
	}
	
	forn(i, 2) sort(all(a[i]), [](pt a, pt b) {
		if (a.x == b.x) return a.y > b.y;
		return a.x < b.x;
	});
	
	segtree t1(sz(a[0]) + 1), t2(sz(a[1]) + 1);
	t1.upd(0, 0);
	t2.upd(0, 0);
		
	int ans = 0;
	for (int i = 0, j = 0; i + j < n; ) {
		if (i < sz(a[0]) && (j == sz(a[1]) || a[0][i].x <= a[1][j].x)) {
			int pos = upper_bound(all(a[1]), mp(a[0][i].y, -INF)) - a[1].begin() + 1; 
			int cur = t2.get(0, pos) + 1;
			ans = max(ans, cur);
			t1.upd(i + 1, cur);
			t2.add(0, pos, 1);
			++i;
		} else {
			int pos = upper_bound(all(a[0]), mp(a[1][j].y, -INF)) - a[0].begin() + 1; 
			int cur = t1.get(0, pos) + 1;
			ans = max(ans, cur);
			t2.upd(j + 1, cur);
			t1.add(0, pos, 1);
			++j;
		}
	}
	
	printf("%d\n", ans);
}

#include<bits/stdc++.h>

using namespace std;

typedef long long li;

const int N = 300043;

bool is_bridge[N];
int w[N];
int c[N];
int v[N];
vector<pair<int, int> > g[N];

vector<pair<int, int> > g2[N];
int comp[N];
li sum[N];
li dp[N];
int cnt[N];
int fup[N];
int tin[N];
int T = 0;
li ans[N];
int v1[N], v2[N];

int n, m, k;

int dfs1(int x, int e)
{
	tin[x] = T++;
	fup[x] = tin[x];
	for(auto p : g[x])
	{
		int y = p.first;
		int i = p.second;
		if(i == e)
			continue;
		if(tin[y] != -1)
			fup[x] = min(fup[x], tin[y]);
		else
		{
			fup[x] = min(fup[x], dfs1(y, i));
			if(fup[y] > tin[x])
				is_bridge[i] = true;
		}
	}
	return fup[x];
}

void dfs2(int x, int cc)
{
	if(comp[x] != -1)
		return;
	comp[x] = cc;
	cnt[cc] += v[x];
	sum[cc] += c[x];
	for(auto y : g[x])
		if(!is_bridge[y.second])
			dfs2(y.first, cc);
}

void process_edge(int x, int y, int m, int weight)
{
	li add_dp = dp[y];
	if(cnt[y] > 0 && cnt[y] < k)
		add_dp = max(0ll, add_dp - weight);
	
	cnt[x] += m * cnt[y];
	dp[x] += m * add_dp;
}

void link(int x, int y, int weight)
{
	process_edge(x, y, 1, weight);
}

void cut(int x, int y, int weight)
{
	process_edge(x, y, -1, weight);
}

void dfs3(int x, int p)
{
    dp[x] = sum[x];
	for(auto e : g2[x])
	{
		int i = e.second;
		int y = e.first;
		if(y == p)
			continue;
		dfs3(y, x);
		link(x, y, w[i]);
	}
}

void dfs4(int x, int p)
{
	ans[x] = dp[x];
	for(auto e : g2[x])
	{
		int i = e.second;
		int y = e.first;
		if(y == p)
			continue;
		cut(x, y, w[i]);
		link(y, x, w[i]);
		dfs4(y, x);
		cut(y, x, w[i]);
		link(x, y, w[i]);
	}
}

int main()
{
	scanf("%d %d %d", &n, &m, &k);
	for(int  i = 0; i < k; i++)
	{
		int x;
		scanf("%d", &x);
		--x;
		v[x] = 1;
	}
	for(int i = 0; i < n; i++)
		scanf("%d", &c[i]);
	for(int i = 0; i < m; i++)
		scanf("%d", &w[i]);
	for(int i = 0; i < m; i++)
	{
		scanf("%d %d", &v1[i], &v2[i]);
		--v1[i];
		--v2[i];
		g[v1[i]].push_back(make_pair(v2[i], i));
		g[v2[i]].push_back(make_pair(v1[i], i));
	}
	
	for(int i = 0; i < n; i++)
	{
		tin[i] = -1;
		comp[i] = -1;
	}
	dfs1(0, -1);
	int cc = 0;
	for(int i = 0; i < n; i++)
		if(comp[i] == -1)
			dfs2(i, cc++);
	for(int i = 0; i < m; i++)
		if(is_bridge[i])
		{
			g2[comp[v1[i]]].push_back(make_pair(comp[v2[i]], i));
			g2[comp[v2[i]]].push_back(make_pair(comp[v1[i]], i));
		}
	dfs3(0, 0);
	dfs4(0, 0);
	for(int i = 0; i < n; i++)
		printf("%lld ", ans[comp[i]]);
	puts("");
}