結果
| 問題 | No.839 Keep Distance and Nobody Explodes |
| コンテスト | |
| ユーザー |
penguinshunya
|
| 提出日時 | 2019-06-15 07:11:35 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 29 ms / 2,000 ms |
| コード長 | 2,646 bytes |
| コンパイル時間 | 1,885 ms |
| コンパイル使用メモリ | 198,684 KB |
| 最終ジャッジ日時 | 2025-01-07 04:42:17 |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 30 |
ソースコード
#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < int(n); i++)
#define rrep(i, n) for (int i = int(n) - 1; i >= 0; i--)
#define reps(i, n) for (int i = 1; i <= int(n); i++)
#define rreps(i, n) for (int i = int(n); i >= 1; i--)
#define repc(i, n) for (int i = 0; i <= int(n); i++)
#define rrepc(i, n) for (int i = int(n); i >= 0; i--)
#define repi(i, a, b) for (int i = int(a); i < int(b); i++)
#define repic(i, a, b) for (int i = int(a); i <= int(b); i++)
#define each(x, y) for (auto &x : y)
#define all(a) (a).begin(), (a).end()
#define bit(b) (1ll << (b))
#define uniq(v) (v).erase(unique(all(v)), (v).end())
using namespace std;
using i32 = int;
using i64 = long long;
using f80 = long double;
using vi32 = vector<i32>;
using vi64 = vector<i64>;
using vf80 = vector<f80>;
using vstr = vector<string>;
inline void yes() { cout << "Yes" << '\n'; exit(0); }
inline void no() { cout << "No" << '\n'; exit(0); }
inline i64 gcd(i64 a, i64 b) { if (min(a, b) == 0) return max(a, b); if (a % b == 0) return b; return gcd(b, a % b); }
inline i64 lcm(i64 a, i64 b) { return a / gcd(a, b) * b; }
void solve(); int main() { ios::sync_with_stdio(0); cin.tie(0); cout << fixed << setprecision(16); solve(); return 0; }
template <typename T> class pqasc : public priority_queue<T, vector<T>, greater<T>> {};
template <typename T> class pqdesc : public priority_queue<T, vector<T>, less<T>> {};
template <typename T> inline void amax(T &x, T y) { if (x < y) x = y; }
template <typename T> inline void amin(T &x, T y) { if (x > y) x = y; }
template <typename T> inline T power(T x, i64 n, T e = 1) { T r = e; while (n > 0) { if (n & 1) r *= x; x *= x; n >>= 1; } return r; }
template <typename T> istream& operator>>(istream &is, vector<T> &v) { for (auto &x : v) is >> x; return is; }
template <typename T> ostream& operator<<(ostream &os, const vector<T> &v) { rep(i, v.size()) { if (i) os << ' '; os << v[i]; } return os; }
void solve() {
int n; cin >> n;
if (n == 2) {
cout << 1 << " " << 2 << '\n';
cout << 3 << " " << 4 << '\n';
return;
}
vector<vi32> ans(n, vi32(n));
bool rev = false;
rep(i, n / 2) {
int x, y = i;
if (rev) x = n - 1; else x = 0;
int w = n / 2 - 1;
reps(j, 2 * n) {
ans[y][x] = j + i * n * 2;
if (j == 2 * n) break;
y = y < n / 2 ? y + n / 2 : y - n / 2;
if (!rev) {
x = (x + w) % n;
while (ans[y][x] > 0) x = (x + 1) % n;
} else {
x = (x - w + n) % n;
while (ans[y][x] > 0) x = (x - 1 + n) % n;
}
}
if (!rev && x < n / 2 || rev && x >= n / 2) rev = !rev;
}
rep(i, n) cout << ans[i] << '\n';
}
penguinshunya