結果
問題 | No.1036 Make One With GCD 2 |
ユーザー |
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提出日時 | 2020-07-08 03:10:04 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 733 ms / 2,000 ms |
コード長 | 3,442 bytes |
コンパイル時間 | 3,070 ms |
コンパイル使用メモリ | 240,032 KB |
最終ジャッジ日時 | 2025-01-11 16:46:53 |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 SegmentTree { Monoid merge; T unity; int N; vector<T> node; SegmentTree(Monoid f, T id) : merge(f), unity(id) {} void init(int sz) { N = 1; while (N < sz) N <<= 1; node.assign(2*N,unity); } void set(int k, const T &val) {node[k+N] = val;} void build() { for (int i = N-1; i > 0; --i) { node[i] = merge(node[i<<1|0], node[i<<1|1]); } } // (0-indexed) void update(int x, T val) { x += N; node[x] = val; while (x > 1) { x >>= 1; node[x] = merge(node[x<<1|0], node[x<<1|1]); } } // [l, r) (0-indexed) T get(int l, int r) { if (l >= r) return unity; T resl = unity, resr = unity; l += N; r += N; while (l < r) { if (l & 1) resl = merge(resl, node[l++]); l >>= 1; if (r & 1) resr = merge(node[--r], resr); r >>= 1; } return merge(resl, resr); } template<typename C> int binarysearch(int s, const C &check, T &acc, int k, int l, int r) { if (r-l==1) { acc = merge(acc,node[k]); return check(acc) ? k - N : -1; } int m = (l+r)>>1; if(m <= s) return binarysearch(s, check, acc, (k<<1)|1, m, r); if(s <= l && !check(merge(acc,node[k]))) { acc = merge(acc,node[k]); return -1; } int vl = binarysearch(s, check, acc, (k<<1)|0, l, m); if(~vl) return vl; return binarysearch(s, check, acc, (k<<1)|1, m, r); } template<typename C> int binarysearch(int s, const C &check) { T acc = unity; return binarysearch(s, check, acc, 1, 0, N); } T operator[](int x) {return node[x+N];} }; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int 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; SegmentTree seg(f,id); seg.init(N); rep(i,N) seg.set(i,A[i]); seg.build(); auto check=[](ll x) {return x==1;}; ll ans = 0; rep(i,N) { int k = seg.binarysearch(i,check); if (k==-1) continue; ans += N-k; } cout << ans << ln; }