結果

問題 No.1626 三角形の構築
ユーザー nullnull
提出日時 2021-06-19 17:34:04
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 7,284 bytes
コンパイル時間 8,004 ms
コンパイル使用メモリ 486,820 KB
実行使用メモリ 13,636 KB
最終ジャッジ日時 2024-10-12 11:30:34
合計ジャッジ時間 18,452 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge1
このコードへのチャレンジ
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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 WA -
testcase_01 WA -
testcase_02 AC 2 ms
6,820 KB
testcase_03 AC 2 ms
6,820 KB
testcase_04 AC 2 ms
6,820 KB
testcase_05 AC 2 ms
6,816 KB
testcase_06 AC 2 ms
6,820 KB
testcase_07 WA -
testcase_08 WA -
testcase_09 WA -
testcase_10 WA -
testcase_11 WA -
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 WA -
testcase_16 WA -
testcase_17 WA -
testcase_18 WA -
testcase_19 WA -
testcase_20 WA -
testcase_21 WA -
testcase_22 WA -
testcase_23 WA -
testcase_24 TLE -
testcase_25 -- -
testcase_26 -- -
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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);
*/


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

ll sq(ll n) {
    ll ng = -1, ok = 3 * 1e9;
    while (abs(ng - ok) > 1) {
        ll mid = (ok + ng) / 2;
        if (mid * mid >= n)ok = mid;
        else ng = mid;
    }
    if (ok * ok == n)return ok;
    else return -1;
}

struct Miller {
    const vector<long long> v = { 2 , 7 , 61 }; // < 4,759,123,141
    // x^k (mod m)
    long long modpow(long long x, long long k, long long m) {
        long long res = 1;
        while (k) {
            if (k & 1) {
                res = res * x % m;
            }
            k /= 2;
            x = x * x % m;
        }
        return res;
    }
    // check if n is prime
    bool check(long long n) {
        if (n < 2) {
            return false;
        }
        long long d = n - 1;
        long long s = 0;
        while (d % 2 == 0) {
            d /= 2;
            s++;
        }
        for (long long a : v) {
            if (a == n) {
                return true;
            }
            if (modpow(a, d, n) != 1) {
                bool ok = true;
                for (long long r = 0; r < s; r++) {
                    if (modpow(a, d * (1LL << r), n) == n - 1) {
                        ok = false;
                        break;
                    }
                }
                if (ok) {
                    return false;
                }
            }
        }
        return true;
    }
};

struct Rho {
    mt19937 mt;
    Miller miller;
    long long c;
    Rho() {
        mt.seed(clock());
    }
    inline long long f(long long x, long long n) {
        return (x * x + c) % n;
    }
    long long check(long long n) {
        if (n == 4) {
            return 2;
        }
        c = mt() % n;
        long long x = mt() % n;
        long long y = x;
        long long d = 1;
        while (d == 1) {
            x = f(x, n);
            y = f(f(y, n), n);
            d = gcd(abs(x - y), n);
        }
        if (d == n) {
            return -1;
        }
        return d;
    }
    vector<long long> factor(long long n) {
        if (n <= 1) {
            return {};
        }
        if (miller.check(n)) {
            return { n };
        }
        long long res = -1;
        while (res == -1) {
            res = check(n);
        }
        vector<long long> fa = factor(res);
        vector<long long> fb = factor(n / res);
        fa.insert(fa.end(), fb.begin(), fb.end());
        return fa;
    }
};

Rho rho;

void dfs(const map<ll, ll>& f, ll num, const map<ll, ll>::iterator& ite, vector<ll>& d) {
    if (ite == f.end()) {
        d.push_back(num);
        return;
    }
    rep(i, ite->second + 1) {
        dfs(f, num, next(ite), d);
        num *= ite->first;
    }
}

vector<ll> divisor(ll n) {
    map<ll, ll> mp;
    for (const auto& aa : rho.factor(n))++mp[aa];
    vector<ll>ret;
    dfs(mp, 1, mp.begin(), ret);
    return ret;
}

int main() {

    int T;
    scanf("%d", &T);
    while (T--) {
        ll s, t;
        scanf("%lld%lld", &s, &t);
        s *= 4;
        s = s * s;
        if (s % t) {
            puts("0");
            continue;
        }
        s /= t;
        vector<ll> d = divisor(s);
        ll a = -1, b = -1, c = -1, x = 0, y = 0, z = 0;
        vector<vector<ll>> ans;
        rep(i, (d.size() + 1) / 2) {
            for (int j = i + 1; j < d.size(); ++j) {
                ll S = s;
                S /= d[i];
                if (S % d[j])continue;
                S /= d[j];
                if (S == t - d[i] - d[j]) {
                    x = d[i];
                    y = d[j];
                    z = t - d[i] - d[j];
                    if ((x + y) % 2 or (y + z) % 2 or (z + x) % 2)continue;
                    a = y + z;
                    b = z + x;
                    c = x + y;
                    a /= 2;
                    b /= 2;
                    c /= 2;
                    ans.push_back({ a, b, c });
                }
            }
        }
        printf("%d\n", (int)ans.size());
        for (const auto& aa : ans) {
            for (const auto& aaa : aa)printf("%lld ", aaa);
            puts("");
        }
    }

    Please AC;
}
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