結果
| 問題 |
No.2358 xy+yz+zx=N
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-08-13 12:56:18 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,894 bytes |
| コンパイル時間 | 3,579 ms |
| コンパイル使用メモリ | 289,720 KB |
| 実行使用メモリ | 7,720 KB |
| 最終ジャッジ日時 | 2025-08-13 12:56:24 |
| 合計ジャッジ時間 | 6,090 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 4 WA * 6 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
template <class F> class y_combinator {
F f;
public:
y_combinator(F&& f) : f(std::forward<F>(f)) {}
template <class... Args> auto operator()(Args&&... args) const { return f(*this, std::forward<Args>(args)...); }
};
using ll = long long;
using ld = long double;
using u8 = uint8_t;
using u32 = uint32_t;
using u64 = uint64_t;
using vi = vector<int>;
using vl = vector<ll>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
template <class T, class U = std::less<T>> using prique = std::priority_queue<T, std::vector<T>, U>;
inline constexpr int popcnt(u64 x) noexcept { return __builtin_popcount(x); }
template <class T> T floor(T a, T b) noexcept { return a / b - (a % b && (a ^ b) < 0); }
template <class T> T ceil(T a, T b) noexcept { return floor(a + b - 1, b); }
template <class T> bool chmin(T& x, const T& y) noexcept { return (x > y ? x = y, true : false); }
template <class T> bool chmax(T& x, const T& y) noexcept { return (x < y ? x = y, true : false); }
void SCAN() {}
template <class H, class... T> void SCAN(H& h, T&... t) { std::cin >> h, SCAN(t...); }
#define INT(...) \
int __VA_ARGS__; \
SCAN(__VA_ARGS__)
#define LL(...) \
long long __VA_ARGS__; \
SCAN(__VA_ARGS__)
#define LD(...) \
long double __VA_ARGS__; \
SCAN(__VA_ARGS__)
#define STR(...) \
std::string __VA_ARGS__; \
SCAN(__VA_ARGS__)
#define CHAR(...) \
char __VA_ARGS__; \
SCAN(__VA_ARGS__)
#define VEC(type, name, size) \
std::vector<type> name(size); \
for (int i = 0; i < (int)size; i++) SCAN(name[i]);
#define VV(type, name, h, w) \
std::vector<std::vector<type>> name(h, std::vector<type>(w)); \
for (int i = 0; i < (int)h; i++) \
for (int j = 0; j < (int)w; j++) SCAN(name[i][j]);
#define overload4(a, b, c, d, e, ...) e
#define rep1(a) for (long long _i = 0; _i < (a); _i++)
#define rep2(i, a) for (long long i = 0; i < (a); i++)
#define rep3(i, a, b) for (long long i = (a); i < (b); i++)
#define rep4(i, a, b, c) for (long long i = (a); i < (b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define rrep(i, a, b, c) for (long long i = (a); i > (b); i += (c))
#define all(x) std::begin(x), std::end(x)
#define rall(x) std::rbegin(x), std::rend(x)
#define len(x) (long long)(size(x))
#define pb push_back
#ifndef LOCAL
#define debug(...)
#endif
#include <atcoder/modint>
using mint = atcoder::modint998244353;
void run_case() {
LL(N);
vector<vl> ans;
{
for (ll x = 0; x * x <= N; x++) {
for (ll y = x + 1; x * y + y * y + y * x <= N; y++) {
ll zz = N - x * y;
if (zz % (x + y) == 0) {
vl t{x, y, zz / (x + y)};
sort(all(t));
do { ans.pb(t); } while (next_permutation(all(t)));
}
}
}
}
{
for (ll x = 1; x * x <= N; x++) {
ll zz = N - x * x;
if (zz % (x + x) != 0) continue;
zz /= (x + x);
if (zz > x) {
vl t{x, x, zz};
do { ans.pb(t); } while (next_permutation(all(t)));
}
if (zz < x) {
vl t{zz, x, x};
do { ans.pb(t); } while (next_permutation(all(t)));
}
}
}
{
for (ll x = 1; x * x * 3 <= N; x++) {
if (x * x * 3 == N) ans.pb({x, x, x});
}
}
cout << len(ans) << "\n";
for (auto v : ans) {
cout << v[0] << " " << v[1] << " " << v[2] << "\n";
}
}
int main() {
std::ios_base::sync_with_stdio(false);
std::cin.tie(nullptr);
std::fixed(std::cout).precision(16);
int T = 1;
while (T--) run_case();
return 0;
}