結果
問題 | No.1036 Make One With GCD 2 |
ユーザー |
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提出日時 | 2020-06-09 17:20:36 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 597 ms / 2,000 ms |
コード長 | 1,865 bytes |
コンパイル時間 | 2,614 ms |
コンパイル使用メモリ | 203,464 KB |
最終ジャッジ日時 | 2025-01-11 00:31:24 |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 41 |
ソースコード
#include <bits/stdc++.h>using namespace std;template<class T>struct queue_aggregation {using F = function<T(T, T)>;using value_type = T;private :struct node {value_type val, sum;node (const value_type &val, const value_type &sum) : val(val), sum(sum) { }};const F f;stack<node> front_stack, back_stack;public :queue_aggregation (const F &f) : f(f), front_stack(), back_stack() { }constexpr bool empty () const noexcept {return (front_stack.empty() and back_stack.empty());}constexpr size_t size () const noexcept {return (front_stack.size() + back_stack.size());}void push (const value_type &x) {if (back_stack.empty()) {back_stack.emplace(x, x);} else {value_type s = f(back_stack.top().sum, x);back_stack.emplace(x, s);}}void pop () {assert(not empty());if (front_stack.empty()) {front_stack.emplace(back_stack.top().val, back_stack.top().val);back_stack.pop();while (not back_stack.empty()) {value_type s = f(back_stack.top().val, front_stack.top().sum);front_stack.emplace(back_stack.top().val, s);back_stack.pop();}}front_stack.pop();}value_type fold () {assert(not empty());if (front_stack.empty()) {return (back_stack.top().sum);} else if (back_stack.empty()) {return (front_stack.top().sum);} else {return (f(front_stack.top().sum, back_stack.top().sum));}}};int main() {int n;cin >> n;vector<long long> a(n);for (int i = 0; i < n; i++) {cin >> a[i];}queue_aggregation<long long> que([](long long a, long long b) { return gcd(a, b); });long long ans = 0;for (int l = 0, r = 0; l < n; l++) {while ((que.empty() or que.fold() > 1) and r < n) que.push(a[r++]);if (not que.empty() and que.fold() == 1) ans += (n - r + 1);que.pop();}cout << ans << '\n';return 0;}