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C.cpp
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C.cpp
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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
void solve()
{
int n, k;
cin >> n >> k;
if (k == 0) {
for (int i = 0; i < n; i++) {
cout << "-1 ";
}
cout << '\n';
return;
}
vector<int> a(50, INT_MAX);
for (int i = 1; i <= n; i++) {
a[i - 1] = (i * (i + 1)) / 2;
}
auto it = upper_bound(a.begin(), a.end(), k);
int idx = (int)((--it) - a.begin());
vector<int> ans(n, -1000);
fill(ans.begin(), ans.begin() + idx + 1, 2);
int x = k - *it;
if (x > 0) {
int val = 2 * ((idx + 1) - (x - 1)) - 1;
ans[idx + 1] = -val;
}
for (auto &x : ans) {
cout << x << ' ';
}
cout << '\n';
}
int main()
{
#ifndef ONLINE_JUDGE
//freopen("input.txt", "r", stdin);
//freopen("output.txt", "w", stdout);
//freopen("Error.txt", "w", stderr);
#endif
ios_base::sync_with_stdio(false);
cin.tie(NULL), cout.tie(NULL);
int t = 1;
cin >> t;
while (t--) solve();
return 0;
}