diff --git a/BZOJ/3236/3236.cpp b/BZOJ/3236/3236.cpp new file mode 100644 index 00000000..1e6b0b36 --- /dev/null +++ b/BZOJ/3236/3236.cpp @@ -0,0 +1,88 @@ +#include +#include +#include +#include +#include + +using std::cin; +using std::cout; +const char endl = '\n'; + +const int N = 1e6 + 5; + +int n, m, w[N], c[N], c1[N], c2[N], t; +std::pair now, ans[N]; +std::vector> q; + +inline int lowbit(int x) { + return x & -x; +} + +void add(int *c, int x, int y) { + for (; x <= n; x += lowbit(x)) c[x] += y; +} + +int sum(int *c, int x) { + int res = 0; + for (; x; x -= lowbit(x)) res += c[x]; + return res; +} + +void add(int x) { + if (!c[x]++) add(c1, x, 1); + add(c2, x, 1); +} + +void del(int x) { + if (!--c[x]) add(c1, x, -1); + add(c2, x, -1); +} + +int main() { + std::ios::sync_with_stdio(false); + cin.tie(nullptr); + + cin >> n >> m; + + for (int i = 1; i <= n; i++) { + cin >> w[i]; + } + + t = sqrt(n); + + for (int i = 1, l, r, a, b; i <= m; i++) { + cin >> l >> r >> a >> b; + + q.push_back(std::make_tuple(i, l, r, a, b)); + } + + std::sort(q.begin(), q.end(), [&](auto a, auto b) { + int p = std::get<1>(a) / t, + q = std::get<1>(b) / t; + int x = std::get<2>(a), + y = std::get<2>(b); + + return p == q + ? p & 1 ? x < y : x > y + : p < q; + }); + + int i = 0, j = 1; + for (auto &e : q) { + int id, l, r, a, b; + std::tie(id, l, r, a, b) = e; + + while (i < r) add(w[++i]); + while (i > r) del(w[i--]); + while (j < l) del(w[j++]); + while (j > l) add(w[--j]); + + ans[id] = std::make_pair(sum(c2, b) - sum(c2, a - 1), sum(c1, b) - sum(c1, a - 1)); + } + + for (int i = 1; i <= m; i++) { + cout << ans[i].first << ' ' << ans[i].second << endl; + } + + return 0; +} diff --git a/BZOJ/3236/data/1.in b/BZOJ/3236/data/1.in new file mode 100644 index 00000000..31871728 --- /dev/null +++ b/BZOJ/3236/data/1.in @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:caf83c133850a95d3565de5dd4c3a871aca6da947886aae2f808d0bf558e7f28 +size 19496 diff --git 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