結果

問題 No.1746 Sqrt Integer Segments
ユーザー 👑 nullnull
提出日時 2021-08-08 02:05:48
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 323 ms / 2,000 ms
コード長 4,483 bytes
コンパイル時間 8,130 ms
コンパイル使用メモリ 547,324 KB
実行使用メモリ 26,560 KB
最終ジャッジ日時 2023-10-11 10:26:41
合計ジャッジ時間 14,368 ms
ジャッジサーバーID
(参考情報)
judge11 / judge13
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 16 ms
8,616 KB
testcase_01 AC 16 ms
8,656 KB
testcase_02 AC 226 ms
21,548 KB
testcase_03 AC 123 ms
15,660 KB
testcase_04 AC 164 ms
18,048 KB
testcase_05 AC 322 ms
26,188 KB
testcase_06 AC 96 ms
14,708 KB
testcase_07 AC 39 ms
10,724 KB
testcase_08 AC 207 ms
21,392 KB
testcase_09 AC 317 ms
26,160 KB
testcase_10 AC 87 ms
14,240 KB
testcase_11 AC 270 ms
24,584 KB
testcase_12 AC 314 ms
26,560 KB
testcase_13 AC 307 ms
26,476 KB
testcase_14 AC 323 ms
26,484 KB
testcase_15 AC 312 ms
26,528 KB
testcase_16 AC 311 ms
26,420 KB
testcase_17 AC 179 ms
19,556 KB
testcase_18 AC 37 ms
11,916 KB
testcase_19 AC 37 ms
11,824 KB
testcase_20 AC 36 ms
12,004 KB
testcase_21 AC 45 ms
9,864 KB
testcase_22 AC 45 ms
9,796 KB
testcase_23 AC 30 ms
9,488 KB
testcase_24 AC 74 ms
11,840 KB
testcase_25 AC 74 ms
11,960 KB
testcase_26 AC 74 ms
11,952 KB
testcase_27 AC 116 ms
11,968 KB
testcase_28 AC 115 ms
11,960 KB
testcase_29 AC 115 ms
11,964 KB
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ソースコード

diff #

/*
このコード、と~おれ!
Be accepted!
∧_∧ 
(。・ω・。)つ━☆・*。
⊂   ノ    ・゜+.
 しーJ   °。+ *´¨)
          .· ´¸.·*´¨) ¸.·*¨)
		            (¸.·´ (¸.·'* ☆
*/

#include <cstdio>
#include <algorithm>
#include <string>
#include <cmath>
#include <cstring>
#include <vector>
#include <numeric>
#include <iostream>
#include <random>
#include <map>
#include <unordered_map>
#include <queue>
#include <regex>
#include <functional>
#include <complex>
#include <list>
#include <cassert>
#include <iomanip>
#include <set>
#include <stack>
#include <bitset>
#include <array>
#include <chrono>

//#pragma GCC target("arch=skylake-avx512")
#pragma GCC target("avx2")
//#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse4")
#pragma GCC optimize("unroll-loops")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define repeat(i, n, m) for(int i = n; i < (m); ++i)
#define rep(i, n) for(int i = 0; i < (n); ++i)
#define printynl(a) printf(a ? "yes\n" : "no\n")
#define printyn(a) printf(a ? "Yes\n" : "No\n")
#define printYN(a) printf(a ? "YES\n" : "NO\n")
#define printim(a) printf(a ? "possible\n" : "imposible\n")
#define printdb(a) printf("%.50lf\n", a)
#define printLdb(a) printf("%.50Lf\n", a)
#define printdbd(a) printf("%.16lf\n", a)
#define prints(s) printf("%s\n", s.c_str())
#define all(x) (x).begin(), (x).end()
#define deg_to_rad(deg) (((deg)/360.0L)*2.0L*PI)
#define rad_to_deg(rad) (((rad)/2.0L/PI)*360.0L)
#define Please return
#define AC 0
#define manhattan_dist(a, b, c, d) (abs(a - c) + abs(b - d))

using ll = long long;
using ull = unsigned long long;

constexpr int INF = 1073741823;
constexpr int MINF = -1073741823;
constexpr ll LINF = ll(4661686018427387903);
constexpr ll MOD = 1e9 + 7;
constexpr ll mod = 998244353;
constexpr long double eps = 1e-6;
const long double PI = acosl(-1.0L);

using namespace std;

void scans(string& str) {
	char c;
	str = "";
	scanf("%c", &c);
	if (c == '\n')scanf("%c", &c);
	while (c != '\n' && c != -1 && c != ' ') {
		str += c;
		scanf("%c", &c);
	}
}

void scanc(char& str) {
	char c;
	scanf("%c", &c);
	if (c == -1)return;
	while (c == '\n') {
		scanf("%c", &c);
	}
	str = c;
}

double acot(double x) {
	return PI / 2 - atan(x);
}

ll LSB(ll n) { return (n & (-n)); }

template<typename T>
inline T chmin(T& a, const T& b) {
	if (a > b)a = b;
	return a;
}

template<typename T>
inline T chmax(T& a, const T& b) {
	if (a < b)a = b;
	return a;
}

//cpp_int
#if __has_include(<boost/multiprecision/cpp_int.hpp>)
#include <boost/multiprecision/cpp_int.hpp>
#include <boost/multiprecision/cpp_dec_float.hpp>
using namespace boost::multiprecision;
#else
using cpp_int = ll;
#endif

//atcoder library
#if __has_include(<atcoder/all>)
#include <atcoder/all>
//using namespace atcoder;
#endif

/*
	random_device seed_gen;
	mt19937 engine(seed_gen());
	uniform_int_distribution dist(1, 100);
*/


/*----------------------------------------------------------------------------------*/

const int MAX = 1000100;
bool IsPrime[MAX];
int MinFactor[MAX];
vector<int> preprocess(int n = MAX) {
	vector<int> res;
	for (int i = 0; i < n; ++i) IsPrime[i] = true, MinFactor[i] = -1;
	IsPrime[0] = false; IsPrime[1] = false;
	MinFactor[0] = 0; MinFactor[1] = 1;
	for (int i = 2; i < n; ++i) {
		if (IsPrime[i]) {
			MinFactor[i] = i;
			res.push_back(i);
			for (int j = i * 2; j < n; j += i) {
				IsPrime[j] = false;
				if (MinFactor[j] == -1) MinFactor[j] = i;
			}
		}
	}
	return res;
}

vector<pair<int, int> > prime_factor(int n) {
	vector<pair<int, int> > res;
	while (n != 1) {
		int prime = MinFactor[n];
		int exp = 0;
		while (MinFactor[n] == prime) {
			++exp;
			n /= prime;
		}
		res.push_back(make_pair(prime, exp));
	}
	return res;
}

int main() {

	preprocess();
	random_device seed_gen;
	mt19937 engine(seed_gen());
	uniform_int_distribution dist(1ll, (ll)1e18);
	int n;
	scanf("%d", &n);
	vector<int> a(n);
	rep(i, n)scanf("%d", &a[i]);
	vector<ll> b(n), c(n + 1);
	map<int, ll> mp;
	rep(i, n) {
		auto c = prime_factor(a[i]);
		for (auto& [p, q] : c) {
			if (q % 2) {
				if (not mp[p]) {
					mp[p] = dist(engine);
				}
				b[i] ^= mp[p];
			}
		}
	}
	rep(i, n) {
		c[i + 1] = c[i] xor b[i];
	}
	map<ll, ll> mp2;
	rep(i, n + 1) {
		++mp2[c[i]];
	}
	ll ans = 0;
	for (const auto& [p, q] : mp2)ans += q * (q - 1) / 2;
	printf("%lld\n", ans);

	Please AC;
}
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