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40 lines
1.0 KiB
C++
40 lines
1.0 KiB
C++
#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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#define CRP(t, x) const t &x
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#define OPL(t, x) bool operator<(CRP(t, x)) const
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#define FIL(x, v) memset(x, v, sizeof(x))
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#define CLR(x) FIL(x, 0)
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#define NE1(x) FIL(x, -1)
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#define INF(x) FIL(x, 0x3f)
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typedef long long ll, i64;
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const int N = 2e5 + 50;
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int a[N];
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inline ll Log2(ll x)
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{
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int r = 0;
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while ((1ll << r) <= x) r++;
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return r;
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}
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ll Mask(ll x) { return (1ll << Log2(x)) - 1; }
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int main()
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{
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//for (int i = 0; i < 100; i++) printf("%d:%d\n", i, Log2(i));
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int T, n;
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scanf("%d", &T);
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while (T--)
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{
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scanf("%d", &n);
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printf("%d\n", n == Mask(n));
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for (int i = 2; i <= n; i++)
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{
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int r = i ^ ((1 << Log2(i)) - 1);
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r = r & -r;
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if (r == 0) r = i == n ? 1 : i + 1;
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a[i] = r;
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}
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for (int i = 2; i <= n; i++) printf("%d%c", a[i], " \n"[i == n]);
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}
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return 0;
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} |