結果

問題 No.800 四平方定理
ユーザー 👑 hitonanodehitonanode
提出日時 2019-03-17 21:26:54
言語 C++14
(gcc 11.2.0 + boost 1.78.0)
結果
AC  
実行時間 52 ms / 2,000 ms
コード長 3,386 bytes
コンパイル時間 1,298 ms
使用メモリ 65,664 KB
最終ジャッジ日時 2023-02-11 04:03:08
合計ジャッジ時間 3,744 ms
ジャッジサーバーID
（参考情報） 		judge13 / judge14
このコードへのチャレンジ（β）

テストケース

テストケース表示
入力 結果 実行時間
使用メモリ
testcase_00 AC 16 ms
65,468 KB
testcase_01 AC 17 ms
65,424 KB
testcase_02 AC 16 ms
65,424 KB
testcase_03 AC 17 ms
65,544 KB
testcase_04 AC 16 ms
65,424 KB
testcase_05 AC 16 ms
65,548 KB
testcase_06 AC 15 ms
65,552 KB
testcase_07 AC 17 ms
65,520 KB
testcase_08 AC 17 ms
65,432 KB
testcase_09 AC 17 ms
65,544 KB
testcase_10 AC 33 ms
65,492 KB
testcase_11 AC 32 ms
65,520 KB
testcase_12 AC 33 ms
65,500 KB
testcase_13 AC 29 ms
65,468 KB
testcase_14 AC 30 ms
65,428 KB
testcase_15 AC 33 ms
65,536 KB
testcase_16 AC 31 ms
65,420 KB
testcase_17 AC 30 ms
65,428 KB
testcase_18 AC 31 ms
65,548 KB
testcase_19 AC 33 ms
65,472 KB
testcase_20 AC 17 ms
65,544 KB
testcase_21 AC 17 ms
65,500 KB
testcase_22 AC 33 ms
65,468 KB
testcase_23 AC 52 ms
65,524 KB
testcase_24 AC 48 ms
65,548 KB
testcase_25 AC 51 ms
65,472 KB
testcase_26 AC 15 ms
65,548 KB
testcase_27 AC 16 ms
65,624 KB
testcase_28 AC 47 ms
65,664 KB
testcase_29 AC 51 ms
65,400 KB
testcase_30 AC 47 ms
65,536 KB
testcase_31 AC 45 ms
65,548 KB
testcase_32 AC 47 ms
65,536 KB
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 <bits/stdc++.h>
using namespace std;
using lint = long long int;
using pint = pair<int, int>;
using plint = pair<lint, lint>;
struct fast_ios { fast_ios(){ cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;
#define FOR(i, begin, end) for(int i=(begin),i##_end_=(end);i<i##_end_;i++)
#define IFOR(i, begin, end) for(int i=(end)-1,i##_begin_=(begin);i>=i##_begin_;i--)
#define REP(i, n) FOR(i,0,n)
#define IREP(i, n) IFOR(i,0,n)
template<typename T> istream &operator>>(istream &is, vector<T> &vec){ for (auto &v : vec) is >> v; return is; }
template<typename T> ostream &operator<<(ostream &os, const vector<T> &vec){ os << "["; for (auto v : vec) os << v << ","; os << "]"; return os; }
template<typename T> ostream &operator<<(ostream &os, const deque<T> &vec){ os << "deq["; for (auto v : vec) os << v << ","; os << "]"; return os; }
template<typename T> ostream &operator<<(ostream &os, const set<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> ostream &operator<<(ostream &os, const unordered_set<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> ostream &operator<<(ostream &os, const multiset<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> ostream &operator<<(ostream &os, const unordered_multiset<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &pa){ os << "(" << pa.first << "," << pa.second << ")"; return os; }
template<typename TK, typename TV> ostream &operator<<(ostream &os, const map<TK, TV> &mp){ os << "{"; for (auto v : mp) os << v.first << "=>" << v.second << ","; os << "}"; return os; }
template<typename TK, typename TV> ostream &operator<<(ostream &os, const unordered_map<TK, TV> &mp){ os << "{"; for (auto v : mp) os << v.first << "=>" << v.second << ","; os << "}"; return os; }
template<typename T> void ndarray(vector<T> &vec, int len) { vec.resize(len); }
template<typename T, typename... Args> void ndarray(vector<T> &vec, int len, Args... args) { vec.resize(len); for (auto &v : vec) ndarray(v, args...); }
template<typename T> bool mmax(T &m, const T q) { if (m < q) {m = q; return true;} else return false; }
template<typename T> bool mmin(T &m, const T q) { if (m > q) {m = q; return true;} else return false; }
template<typename T1, typename T2> pair<T1, T2> operator+(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first + r.first, l.second + r.second); }
template<typename T1, typename T2> pair<T1, T2> operator-(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first - r.first, l.second - r.second); }
#define dbg(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ") " << __FILE__ << endl;
#define FI first
#define SE second
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((lint)(x).size())
#define POW2(n) (1LL << (n))

int N, D;
constexpr int Nmax = 2000;
int main()
{
    cin >> N >> D;
    vector<lint> xy(Nmax * Nmax * 2 + 1);
    FOR(i, 1, N + 1) FOR(j, 1, N + 1) xy[i * i + j * j]++;

    lint ans = 0;
    FOR(w, 1, N + 1) FOR(z, 1, N + 1) if (D + w * w - z * z >= 0 and D + w * w - z * z <= Nmax * Nmax * 2) ans += xy[D + w * w - z * z];
    cout << ans << endl;
}
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