結果

問題 No.1036 Make One With GCD 2
ユーザー jupiro
提出日時 2020-04-24 21:44:23
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 1,011 ms / 2,000 ms
コード長 3,456 bytes
コンパイル時間 1,889 ms
コンパイル使用メモリ 129,988 KB
最終ジャッジ日時 2025-01-09 23:25:38
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
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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
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:130:20: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  130 |         ll N; scanf("%lld", &N);
      |               ~~~~~^~~~~~~~~~~~
main.cpp:131:59: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  131 |         vector<ll> a(N); for (int i = 0; i < N; i++) scanf("%lld", &a[i]);
      |                                                      ~~~~~^~~~~~~~~~~~~~~

ソースコード

diff #
プレゼンテーションモードにする

#include <cstdio>
#include <iostream>
#include <string>
#include <sstream>
#include <stack>
#include <algorithm>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include <cstdlib>
#include <bitset>
#include <tuple>
#include <assert.h>
#include <deque>
#include <bitset>
#include <iomanip>
#include <limits>
#include <chrono>
#include <random>
#include <array>
#include <unordered_map>
#include <functional>
#include <complex>
#include <numeric>
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
constexpr long long MAX = 5100000;
constexpr long long INF = 1LL << 60;
constexpr int inf = 1000000007;
constexpr long long mod = 1000000007LL;
//constexpr long long mod = 998244353LL;
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
template< typename Monoid >
struct SegmentTree {
using F = function< Monoid(Monoid, Monoid) >;
int sz;
vector< Monoid > seg;
const F f;
const Monoid M1;
SegmentTree(int n, const F f, const Monoid& M1) : f(f), M1(M1) {
sz = 1;
while (sz < n) sz <<= 1;
seg.assign(2 * sz, M1);
}
void set(int k, const Monoid& x) {
seg[k + sz] = x;
}
void build() {
for (int k = sz - 1; k > 0; k--) {
seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]);
}
}
void update(int k, const Monoid& x) {
k += sz;
seg[k] = x;
while (k >>= 1) {
seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]);
}
}
Monoid query(int a, int b) {
Monoid L = M1, R = M1;
if (a >= b) return M1;
for (a += sz, b += sz; a < b; a >>= 1, b >>= 1) {
if (a & 1) L = f(L, seg[a++]);
if (b & 1) R = f(seg[--b], R);
}
return f(L, R);
}
template< typename C >
int find_subtree(int a, const C& check, Monoid& M, bool type) {
while (a < sz) {
Monoid nxt = type ? f(seg[2 * a + type], M) : f(M, seg[2 * a + type]);
if (check(nxt)) a = 2 * a + type;
else M = nxt, a = 2 * a + 1 - type;
}
return a - sz;
}
template< typename C >
int find_first(int a, const C& check) {
Monoid L = M1;
if (a <= 0) {
if (check(f(L, seg[1]))) return find_subtree(1, check, L, false);
return -1;
}
int b = sz;
for (a += sz, b += sz; a < b; a >>= 1, b >>= 1) {
if (a & 1) {
Monoid nxt = f(L, seg[a]);
if (check(nxt)) return find_subtree(a, check, L, false);
L = nxt;
++a;
}
}
return -1;
}
};
ll f(ll a, ll b) {
return gcd(a, b);
}
bool C(ll a) {
return a == 1;
}
int main()
{
/*
cin.tie(nullptr);
ios::sync_with_stdio(false);
*/
ll N; scanf("%lld", &N);
vector<ll> a(N); for (int i = 0; i < N; i++) scanf("%lld", &a[i]);
SegmentTree<ll> seg(N, f, 0);
for (int i = 0; i < N; i++) seg.set(i, a[i]);
seg.build();
ll res = 0;
for (int i = 0; i < N; i++) {
if (a[i] == 1) {
res += N - i;
continue;
}
if (seg.query(i, N) != 1) break;
ll right = seg.find_first(i, C);
res += N - right;
//cout << res << endl;
}
cout << res << endl;
return 0;
}
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