From 17c13ed975d775f17651d07927ee88b895afebc3 Mon Sep 17 00:00:00 2001 From: Baoshuo Date: Sun, 9 Oct 2022 16:57:02 +0800 Subject: [PATCH] =?UTF-8?q?#1611.=20=E3=80=902022.10.9=20=E8=81=94?= =?UTF-8?q?=E8=80=83=E3=80=91=E5=92=8C=E4=B8=BA=E8=B4=B5=EF=BC=88sum?= =?UTF-8?q?=EF=BC=89?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit https://sjzezoj.com/submission/59820 --- S2OJ/1611/1611.cpp | 69 +++++++++++++++++++++++++++++++++++++ S2OJ/1611/data/ex_sum1.in | 3 ++ S2OJ/1611/data/ex_sum1.out | 3 ++ S2OJ/1611/data/ex_sum2.in | 3 ++ S2OJ/1611/data/ex_sum2.out | 3 ++ S2OJ/1611/data/problem.conf | 3 ++ S2OJ/1611/data/sum1.in | 3 ++ S2OJ/1611/data/sum1.out | 3 ++ S2OJ/1611/data/sum10.in | 3 ++ S2OJ/1611/data/sum10.out | 3 ++ S2OJ/1611/data/sum2.in | 3 ++ S2OJ/1611/data/sum2.out | 3 ++ S2OJ/1611/data/sum3.in | 3 ++ S2OJ/1611/data/sum3.out | 3 ++ S2OJ/1611/data/sum4.in | 3 ++ S2OJ/1611/data/sum4.out | 3 ++ S2OJ/1611/data/sum5.in | 3 ++ S2OJ/1611/data/sum5.out | 3 ++ S2OJ/1611/data/sum6.in | 3 ++ S2OJ/1611/data/sum6.out | 3 ++ S2OJ/1611/data/sum7.in | 3 ++ S2OJ/1611/data/sum7.out | 3 ++ S2OJ/1611/data/sum8.in | 3 ++ S2OJ/1611/data/sum8.out | 3 ++ S2OJ/1611/data/sum9.in | 3 ++ S2OJ/1611/data/sum9.out | 3 ++ 26 files changed, 144 insertions(+) create mode 100644 S2OJ/1611/1611.cpp create mode 100644 S2OJ/1611/data/ex_sum1.in create mode 100644 S2OJ/1611/data/ex_sum1.out create mode 100644 S2OJ/1611/data/ex_sum2.in create mode 100644 S2OJ/1611/data/ex_sum2.out create mode 100644 S2OJ/1611/data/problem.conf create mode 100644 S2OJ/1611/data/sum1.in create mode 100644 S2OJ/1611/data/sum1.out create mode 100644 S2OJ/1611/data/sum10.in create mode 100644 S2OJ/1611/data/sum10.out create mode 100644 S2OJ/1611/data/sum2.in create mode 100644 S2OJ/1611/data/sum2.out create mode 100644 S2OJ/1611/data/sum3.in create mode 100644 S2OJ/1611/data/sum3.out create mode 100644 S2OJ/1611/data/sum4.in create mode 100644 S2OJ/1611/data/sum4.out create mode 100644 S2OJ/1611/data/sum5.in create mode 100644 S2OJ/1611/data/sum5.out create mode 100644 S2OJ/1611/data/sum6.in create mode 100644 S2OJ/1611/data/sum6.out create mode 100644 S2OJ/1611/data/sum7.in create mode 100644 S2OJ/1611/data/sum7.out create mode 100644 S2OJ/1611/data/sum8.in create mode 100644 S2OJ/1611/data/sum8.out create mode 100644 S2OJ/1611/data/sum9.in create mode 100644 S2OJ/1611/data/sum9.out diff --git a/S2OJ/1611/1611.cpp b/S2OJ/1611/1611.cpp new file mode 100644 index 00000000..b188d486 --- /dev/null +++ b/S2OJ/1611/1611.cpp @@ -0,0 +1,69 @@ +#include +#include +#include +#include + +using std::cin; +using std::cout; +const char endl = '\n'; + +const int N = 5e5 + 5, + K = 55; + +int n, k, a[N], pos[N], pre[N][K], nxt[N][K], prev[N], next[N]; +long long ans; +std::set set; + +int main() { + std::ios::sync_with_stdio(false); + cin.tie(nullptr); + + cin >> n >> k; + + for (int i = 1; i <= n; i++) { + cin >> a[i]; + + pos[a[i]] = i; + } + + for (int i = n; i; i--) { + int p = pos[i]; + auto it = set.lower_bound(p); + + std::fill_n(pre[p], K, 0); + std::fill_n(nxt[p], K, n + 1); + pre[p][0] = nxt[p][0] = p; + + if (it != set.end()) { + prev[*it] = p; + next[p] = *it; + + for (int j = *it, l = 1; j && l <= k; j = next[j], l++) { + nxt[p][l] = j; + } + } + + if (it != set.begin()) { + it--; + + prev[p] = *it; + next[*it] = p; + + for (int j = *it, l = 1; j && l <= k; j = prev[j], l++) { + pre[p][l] = j; + } + } + + set.insert(p); + } + + for (int i = 1; i <= n; i++) { + for (int j = 1; j <= k; j++) { + ans += static_cast(a[i]) * (pre[i][j - 1] - pre[i][j]) * (nxt[i][k - j + 1] - nxt[i][k - j]); + } + } + + cout << ans << endl; + + return 0; +} diff --git a/S2OJ/1611/data/ex_sum1.in b/S2OJ/1611/data/ex_sum1.in new file mode 100644 index 00000000..2cf95505 --- /dev/null +++ b/S2OJ/1611/data/ex_sum1.in @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid 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