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63
LibreOJ/133/133.cpp
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63
LibreOJ/133/133.cpp
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#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 = (1 << 12) + 5;
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int n, m, op;
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long long c[N][N];
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int lowbit(int x) {
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return x & -x;
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}
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void add(int x, int y, int v) {
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for (int i = x; i <= n; i += lowbit(i)) {
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for (int j = y; j <= m; j += lowbit(j)) {
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c[i][j] += v;
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}
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}
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}
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long long sum(int x, int y) {
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long long res = 0;
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for (int i = x; i; i -= lowbit(i)) {
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for (int j = y; j; j -= lowbit(j)) {
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res += c[i][j];
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}
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}
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return res;
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}
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long long sum(int x1, int y1, int x2, int y2) {
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return sum(x2, y2) - sum(x1 - 1, y2) - sum(x2, y1 - 1) + sum(x1 - 1, y1 - 1);
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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.tie(nullptr);
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cin >> n >> m;
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while (cin >> op) {
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if (op == 1) {
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int x, y, k;
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cin >> x >> y >> k;
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add(x, y, k);
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} else { // op == 2
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int a, b, c, d;
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cin >> a >> b >> c >> d;
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cout << sum(a, b, c, d) << endl;
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}
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}
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return 0;
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}
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