結果

問題 No.2510 Six Cube Sum Counting
ユーザー tokusakurai
提出日時 2023-10-20 21:56:06
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 3,548 ms / 4,000 ms
コード長 5,088 bytes
コンパイル時間 2,015 ms
コンパイル使用メモリ 204,000 KB
最終ジャッジ日時 2025-02-17 09:21:59
ジャッジサーバーID
(参考情報)
judge3 / judge3
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ファイルパターン 結果
sample AC * 4
other AC * 26
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ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); i++)
#define per(i, n) for (int i = (n)-1; i >= 0; i--)
#define rep2(i, l, r) for (int i = (l); i < (r); i++)
#define per2(i, l, r) for (int i = (r)-1; i >= (l); i--)
#define each(e, v) for (auto &e : v)
#define MM << " " <<
#define pb push_back
#define eb emplace_back
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define sz(x) (int)x.size()
using ll = long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
template <typename T>
using minheap = priority_queue<T, vector<T>, greater<T>>;
template <typename T>
using maxheap = priority_queue<T>;
template <typename T>
bool chmax(T &x, const T &y) {
return (x < y) ? (x = y, true) : false;
}
template <typename T>
bool chmin(T &x, const T &y) {
return (x > y) ? (x = y, true) : false;
}
template <typename T>
int flg(T x, int i) {
return (x >> i) & 1;
}
int pct(int x) { return __builtin_popcount(x); }
int pct(ll x) { return __builtin_popcountll(x); }
int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }
int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }
int botbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); }
int botbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }
template <typename T>
void print(const vector<T> &v, T x = 0) {
int n = v.size();
for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' ');
if (v.empty()) cout << '\n';
}
template <typename T>
void printn(const vector<T> &v, T x = 0) {
int n = v.size();
for (int i = 0; i < n; i++) cout << v[i] + x << '\n';
}
template <typename T>
int lb(const vector<T> &v, T x) {
return lower_bound(begin(v), end(v), x) - begin(v);
}
template <typename T>
int ub(const vector<T> &v, T x) {
return upper_bound(begin(v), end(v), x) - begin(v);
}
template <typename T>
void rearrange(vector<T> &v) {
sort(begin(v), end(v));
v.erase(unique(begin(v), end(v)), end(v));
}
template <typename T>
vector<int> id_sort(const vector<T> &v, bool greater = false) {
int n = v.size();
vector<int> ret(n);
iota(begin(ret), end(ret), 0);
sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; });
return ret;
}
template <typename T>
void reorder(vector<T> &a, const vector<int> &ord) {
int n = a.size();
vector<T> b(n);
for (int i = 0; i < n; i++) b[i] = a[ord[i]];
swap(a, b);
}
template <typename T>
T floor(T x, T y) {
assert(y != 0);
if (y < 0) x = -x, y = -y;
return (x >= 0 ? x / y : (x - y + 1) / y);
}
template <typename T>
T ceil(T x, T y) {
assert(y != 0);
if (y < 0) x = -x, y = -y;
return (x >= 0 ? (x + y - 1) / y : x / y);
}
template <typename S, typename T>
pair<S, T> operator+(const pair<S, T> &p, const pair<S, T> &q) {
return make_pair(p.first + q.first, p.second + q.second);
}
template <typename S, typename T>
pair<S, T> operator-(const pair<S, T> &p, const pair<S, T> &q) {
return make_pair(p.first - q.first, p.second - q.second);
}
template <typename S, typename T>
istream &operator>>(istream &is, pair<S, T> &p) {
S a;
T b;
is >> a >> b;
p = make_pair(a, b);
return is;
}
template <typename S, typename T>
ostream &operator<<(ostream &os, const pair<S, T> &p) {
return os << p.first << ' ' << p.second;
}
struct io_setup {
io_setup() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout << fixed << setprecision(15);
cerr << fixed << setprecision(15);
}
} io_setup;
constexpr int inf = (1 << 30) - 1;
constexpr ll INF = (1LL << 60) - 1;
// constexpr int MOD = 1000000007;
constexpr int MOD = 998244353;
void solve() {
int L = 300;
int X;
cin >> X;
vector<vector<int>> l(L + 1), r(L + 1);
auto cube = [&](int x) { return x * x * x; };
rep(i, L + 1) rep2(j, i, L + 1) rep2(k, j, L + 1) {
int s = cube(i) + cube(j) + cube(k);
l[k].eb(s);
r[i].eb(s);
}
unordered_map<int, int> s;
ll ans = 0;
per(i, L + 1) {
each(e, r[i]) s[e]++;
each(e, l[i]) {
auto it = s.find(X - e);
if (it != end(s)) ans += it->second;
}
}
// cout << sz(s) << '\n';
cout << ans << '\n';
// ll X;
// cin >> X;
// ll ans = 0;
// auto cube = [&](ll x) { return x * x * x; };
// vector<ll> c(301);
// rep(i, 301) c[i] = cube(i);
// int cnt = 0;
// auto rec = [&](auto &&rec, int n, int s, int p) -> void {
// cnt++;
// if (n == 0) {
// ans++;
// return;
// }
// for (int q = p; q >= 0; q--) {
// int t = q * q * q;
// if (t > s) continue;
// if (t * n < s) break;
// rec(rec, n - 1, s - t, q);
// }
// };
// rec(rec, 6, X, 300);
// cout << cnt MM ans << '\n';
}
int main() {
int T = 1;
// cin >> T;
while (T--) solve();
}
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