結果
問題 | No.1036 Make One With GCD 2 |
ユーザー |
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提出日時 | 2020-08-11 17:58:51 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 438 ms / 2,000 ms |
コード長 | 2,744 bytes |
コンパイル時間 | 5,355 ms |
コンパイル使用メモリ | 240,228 KB |
最終ジャッジ日時 | 2025-01-12 20:20:32 |
ジャッジサーバーID (参考情報) |
judge2 / judge6 |
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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
#pragma GCC optimize("Ofast") #include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> using namespace std; using namespace __gnu_pbds; using ll = long long; using u64 = uint_fast64_t; using pii = pair<int, int>; using pll = pair<long long, long long>; #define rep(i, n) for(int i = 0; i < (n); ++i) #define all(x) (x).begin(),(x).end() constexpr char ln = '\n'; constexpr long long MOD = 1000000007; //constexpr long long MOD = 998244353; template<class T1, class T2> inline bool chmax(T1 &a, T2 b) { if (a < b) { a = b; return true;} return false; } template<class T1, class T2> inline bool chmin(T1 &a, T2 b) { if (a > b) { a = b; return true;} return false; } inline int popcount(int x) {return __builtin_popcount(x);} inline int popcount(long long x) {return __builtin_popcountll(x);} void print() { cout << "\n"; } template<class T, class... Args> void print(const T &x, const Args &... args) { cout << x << " "; print(args...); } /////////////////////////////////////////////////////////////////////////////////////////////////////////////// template<typename T, typename Monoid> struct SlidingWindowAggregation { Monoid merge; T unity; vector<pair<T, T>> front, back; SlidingWindowAggregation(Monoid f, T id) : merge(f), unity(id) {} bool empty() const {return front.empty() and back.empty();} int size() const {return front.size() + back.size();} T fold_all() const { T vf = front.empty() ? unity : front.back().second; T vb = back.empty() ? unity : back.back().second; return merge(vf,vb); } void emplace(const T &val) { if (back.empty()) { back.emplace_back(val,val); } else { back.emplace_back(val,merge(back.back().second,val)); } } void pop() { assert(!empty()); if (front.empty()) { front.emplace_back(back.back().first,back.back().first); back.pop_back(); while (!back.empty()) { front.emplace_back(back.back().first,merge(back.back().first,front.back().second)); back.pop_back(); } } front.pop_back(); } }; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); ll N; cin >> N; vector<ll> A(N); rep(i,N) cin >> A[i]; auto f=[](ll a, ll b) {return gcd(a,b);}; const ll id = 0; SlidingWindowAggregation SWAG(f,id); ll ans = N*(N+1)/2; for (int l = 0, r = 0; l < N; l++) { if (r < l) r = l; while (r < N and f(SWAG.fold_all(),A[r]) != 1) { SWAG.emplace(A[r++]); } ans -= r-l; if (!SWAG.empty()) SWAG.pop(); } cout << ans << ln; }