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| author | crupest <crupest@outlook.com> | 2021-03-12 16:03:10 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2021-03-12 16:03:10 +0800 |
| commit | 61e14abc77a486c90f9b9260c64697e8af7bf6fe (patch) | |
| tree | f07c396929579ef7699baefdb5ee82d64a8c591a /works | |
| parent | c3ea801238646fe7a54b29a244d59cbfaabd0903 (diff) | |
| download | crupest-61e14abc77a486c90f9b9260c64697e8af7bf6fe.tar.gz crupest-61e14abc77a486c90f9b9260c64697e8af7bf6fe.tar.bz2 crupest-61e14abc77a486c90f9b9260c64697e8af7bf6fe.zip | |
import(solutions): Add acwing 1236.
Diffstat (limited to 'works')
| -rw-r--r-- | works/solutions/acwing/1236.cpp | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/works/solutions/acwing/1236.cpp b/works/solutions/acwing/1236.cpp new file mode 100644 index 0000000..a89a890 --- /dev/null +++ b/works/solutions/acwing/1236.cpp @@ -0,0 +1,54 @@ +#include <iostream>
+
+const int MAX = 100000;
+const int MM = 100010;
+
+int N;
+
+long long ca[MM];
+long long cb[MM];
+
+int main() {
+ std::ios_base::sync_with_stdio(false);
+ std::cin.tie(nullptr);
+
+ std::cin >> N;
+
+ for (int i = 0; i < N; i++) {
+ int a;
+ std::cin >> a;
+ ca[a]++;
+ }
+
+ for (int n = 1; n <= MAX; n++) {
+ ca[n] = ca[n - 1] + ca[n];
+ }
+
+ for (int i = 0; i < N; i++) {
+ int b;
+ std::cin >> b;
+ cb[b]++;
+ }
+
+ for (int n = 1; n <= MAX; n++) {
+ cb[n] *= ca[n - 1];
+ }
+
+ for (int n = 2; n <= MAX; n++) {
+ cb[n] = cb[n - 1] + cb[n];
+ }
+
+ long long result = 0;
+
+ for (int i = 0; i < N; i++) {
+ int c;
+ std::cin >> c;
+ if (c >= 2) {
+ result += cb[c - 1];
+ }
+ }
+
+ std::cout << result;
+
+ return 0;
+}
|