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#include<bits/stdc++.h>
 
/*
#include <ext/pb_ds/assoc_container.hpp> 
#include <ext/pb_ds/tree_policy.hpp> 
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> 
//order_of_key (k) : Number of items strictly smaller than k .
//find_by_order(k) : K-th element in a set (counting from zero).
*/
using namespace std;
 
#define LL long long
#define LD long double
#define PB push_back
#define MP make_pair
#define all(x) x.begin(), x.end()
 
const LL MOD = (1e9) + 7 ;
const LD EPS = 0.0000001 ;
 
LL pows(LL a, LL b)
{
	if (b == 0) return 1LL;
	LL temp = pows(a, b / 2);
	temp = (temp * temp) % MOD;
	if (b % 2) temp = (temp * a) % MOD;
	return temp;
}
 
const int N = 100000 + 50;
 
LL solve(void)
{
	LL n, m; cin >> n >> m;
 
	LL cnt[52];
	memset(cnt, 0, sizeof(cnt));
	for (int i = 0; i < n; i++){
		LL x; cin >> x;
		for (LL j = 0; j < 52; j++){
			if (x & (1LL << j)) cnt[j]++;
		}
	}
	LL sum[52][2];
	LL sumMn[52];
	for (int i = 0; i < 52; i++){
		sum[i][0] = (n - cnt[i]) * (1LL << i);
		sum[i][1] = (cnt[i]) * (1LL << i);
		if (i == 0) sumMn[i] = min(sum[i][0], sum[i][1]);
		else sumMn[i] = sumMn[i - 1] + min(sum[i][0], sum[i][1]);
		cout << sumMn[i] << " ";
	}
	if (sumMn[51] > m){
		cout << -1 ; 
		return 0;
	}
	LL k = 0;
	cout << endl;
	for (int i = 51; i >= 0; i--){
	    cout << sum[i][0] << " " << sum[i][1] << endl;
		if (sum[i][0] + (i > 0 ? sumMn[i - 1] : 0) <= m){
			k |= (1LL << i);
			m -= sum[i][0];
		} else {
			m -= sum[i][1];
		}
	}
	cout << m ;
}
 
int main(void)
{
	ios_base::sync_with_stdio(false);
    cin.tie(NULL);
 
    int t; cin >> t;
    for (int i = 1; i <= t; i++){
    	cout << "Case #" << i << ": ";
    	solve();
    	cout << endl;
    }
 
	return 0;
}

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Runtime error #stdin #stdout 0.01s 4368KB

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8 2 4

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