26 lines
557 B
C++
26 lines
557 B
C++
#include <bits/stdc++.h>
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using namespace std;
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const int N = 110;
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int n;
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//树状数组模板
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int tr[N];
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#define lowbit(x) (x & -x)
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void add(int x, int c) {
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for (int i = x; i <= n; i += lowbit(i)) tr[i] += c;
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}
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int sum(int x) {
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int res = 0;
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for (int i = x; i; i -= lowbit(i)) res += tr[i];
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return res;
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}
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int main() {
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n = 8;
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for (int i = 1; i <= n; i++) add(i, 1);
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for (int i = 1; i <= 8; i++) cout << tr[i] << endl;
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// for (int i = 1; i <= 8; i++)
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// cout << sum(i) << endl;
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return 0;
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} |