結果

問題 No.1036 Make One With GCD 2
ユーザー Imperi_NightImperi_Night
提出日時 2020-04-24 22:07:13
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 322 ms / 2,000 ms
コード長 4,442 bytes
コンパイル時間 2,038 ms
コンパイル使用メモリ 139,112 KB
最終ジャッジ日時 2025-01-09 23:51:43
ジャッジサーバーID
（参考情報） 		judge3 / judge5
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ファイルパターン 結果
sample AC * 4
other AC * 41
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include <cassert>
#include <algorithm>
#include <array>
#include <bitset>
#include <cctype>
#include <cstdint>
#include <cmath>
#include <complex>
#include <chrono>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <unordered_map>
#include <vector>
#include <random>
#include <memory>
#include <utility>
#include <limits>
#include <list>

/* template start */
 
#define rep(i, a, b) for (long long i = (a); (i) < (b); (i)++)
#define all(i) i.begin(), i.end()
#define debug(...) std::cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)

void debug_out(){std::cerr<<std::endl;}

template<typename Head,typename... Tail>
void debug_out(Head h,Tail... t){
  std::cerr<<" "<<h;
  if(sizeof...(t)>0)std::cout<<" :";
  debug_out(t...);
}
 
template <typename T1, typename T2>
std::ostream& operator<<(std::ostream& os, std::pair<T1, T2> pa) {
  return os << pa.first << " " << pa.second;
}
 
template <typename T>
std::ostream& operator<<(std::ostream& os, std::vector<T> vec) {
  for (std::size_t i = 0; i < vec.size(); i++)os << vec[i] << (i + 1 == vec.size() ? "" : " ");
  return os;
}
 
template<typename T1,typename T2>
inline bool chmax(T1& a,T2 b){return a<b && (a=b,true);}
 
template<typename T1,typename T2>
inline bool chmin(T1& a,T2 b){return a>b && (a=b,true);}
 
long long pow_mod(long long a, long long b, long long mod=-1) {
  if(b==0)return 1;
  if ((a == 0)||(mod!=-1&&(a+mod)%mod==0))return 0;
  long long x = 1;
  while (b > 0) {
    if (b & 1)x = (mod!=-1)?(x * a) % mod:x*a;
    a = (mod!=-1)?(a * a) % mod:a*a;
    b >>= 1;
  }
  return x;
}

template <std::uint_fast64_t Modulus> class modint {
  using u64 = std::uint_fast64_t;

public:
  u64 a;

  constexpr modint(const u64 x = 0) noexcept : a(x % Modulus) {}
  constexpr u64 &value() noexcept { return a; }
  constexpr const u64 &value() const noexcept { return a; }
  constexpr modint operator+(const modint rhs) const noexcept {
    return modint(*this) += rhs;
  }
  constexpr modint operator-(const modint rhs) const noexcept {
    return modint(*this) -= rhs;
  }
  constexpr modint operator*(const modint rhs) const noexcept {
    return modint(*this) *= rhs;
  }
  constexpr modint operator/(const modint rhs) const noexcept {
    return modint(*this) /= rhs;
  }
  constexpr modint &operator+=(const modint rhs) noexcept {
    a += rhs.a;
    if (a >= Modulus) {
      a -= Modulus;
    }
    return *this;
  }
  constexpr modint &operator-=(const modint rhs) noexcept {
    if (a < rhs.a) {
      a += Modulus;
    }
    a -= rhs.a;
    return *this;
  }
  constexpr modint &operator*=(const modint rhs) noexcept {
    a = a * rhs.a % Modulus;
    return *this;
  }
  constexpr modint &operator/=(modint rhs) noexcept {
    u64 exp = Modulus - 2;
    while (exp) {
      if (exp % 2) {
        *this *= rhs;
      }
      rhs *= rhs;
      exp /= 2;
    }
    return *this;
  }
};

/* template end */

//SWAG スライド区間上の演算ができる
template<typename T>
class SWAG{
  private:

  using F=std::function<T(T,T)>;

  F fn;

  std::stack<T> front,back;
  std::vector<T> front_fold,back_fold;

  T id;

  public:

  SWAG(T id_,F fn_):id(id_),fn(fn_),front_fold(1,id_),back_fold(1,id_){}

  void push(T val){
    back.push(val);
    back_fold.push_back(fn(back_fold.back(),val));
  }

  void pop(){
    if(front.empty()){
      assert(front_fold.size()==1);
      while(!back.empty()){
        T temp=back.top();
        back.pop();
        back_fold.pop_back();

        front.push(temp);
        front_fold.push_back(fn(temp,front_fold.back()));
      }
    }

    assert(!front.empty());

    front.pop();
    front_fold.pop_back();
    
  }

  T fold_all(){
    return fn(front_fold.back(),back_fold.back());
  }
};

using ll = long long;
using P=std::pair<long long,long long>;

int main() {
  std::cin.tie(nullptr);
  std::ios::sync_with_stdio(false);

  ll n;
  std::cin>>n;

  std::vector<ll> a(n);
  rep(i,0,n)std::cin>>a[i];

  a.push_back(1);

  SWAG<ll> swag(0ll,[](ll a,ll b){return std::gcd(a,b);});

  swag.push(a[0]);
  ll right=0;

  ll ans=0;

  rep(i,0,n){
    while(swag.fold_all()!=1){
      right++;
      swag.push(a[right]);
    }
    ans+=n-right;

    if(right==i){
      right++;
      swag.push(a[right]);
    }
    swag.pop();
  }

  std::cout<<ans<<"\n";

  return 0;
}
0