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39 lines
636 B
C++
39 lines
636 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int n, m, op, x, y, t[10000005];
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int lowbit(int k) {
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return k & -k;
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}
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void add(int x, int v) {
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for (int i = x; i <= n + 1; i += lowbit(i)) {
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t[i] += v;
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}
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}
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int sum(int x) {
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int ans = 0;
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for (int i = x; i > 0; i -= lowbit(i)) {
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ans += t[i];
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}
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return ans;
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}
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int main() {
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cin >> n >> m;
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for (int i = 0; i < m; i++) {
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cin >> op >> x;
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if (op == 0) {
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cin >> y;
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add(x, 1);
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add(y + 1, -1);
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} else if (op == 1) {
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cout << sum(x) << endl;
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}
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}
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return 0;
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}
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