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https://git.sb/baoshuo/OI-codes.git
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72 lines
1.2 KiB
C++
72 lines
1.2 KiB
C++
#include <iostream>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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const int N = 1e5 + 5;
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int n, q, c1[N], c2[N], r[N], c[N];
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inline int lowbit(int x) {
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return x & -x;
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}
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void add(int *c, int x, int y) {
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for (; x <= n; x += lowbit(x)) c[x] += y;
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}
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int sum(int *c, int x) {
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int ans = 0;
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for (; x; x -= lowbit(x)) ans += c[x];
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return ans;
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}
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int main() {
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std::ios::sync_with_stdio(false);
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cin >> n >> q;
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while (q--) {
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int t;
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cin >> t;
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switch (t) {
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case 1: {
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int x, y;
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cin >> x >> y;
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if (!r[x]++) add(c1, x, 1);
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if (!c[y]++) add(c2, y, 1);
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break;
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}
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case 2: {
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int x, y;
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cin >> x >> y;
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if (!--r[x]) add(c1, x, -1);
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if (!--c[y]) add(c2, y, -1);
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break;
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}
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case 3: {
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int x1, y1, x2, y2;
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cin >> x1 >> y1 >> x2 >> y2;
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cout << ((sum(c1, x2) - sum(c1, x1 - 1) == x2 - x1 + 1) || (sum(c2, y2) - sum(c2, y1 - 1) == y2 - y1 + 1) ? "Yes" : "No") << endl;
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break;
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}
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}
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}
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return 0;
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}
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