結果
問題 | No.133 カードゲーム |
ユーザー |
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提出日時 | 2019-04-30 09:48:49 |
言語 | C++11 (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 2 ms / 5,000 ms |
コード長 | 1,723 bytes |
コンパイル時間 | 2,865 ms |
コンパイル使用メモリ | 100,788 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-12-28 01:42:23 |
合計ジャッジ時間 | 2,123 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 19 |
ソースコード
#include <iostream>#include <vector>#include <array>#include <list>#include <queue>#include <set>#include <map>#include <unordered_map>#include <unordered_set>#include <utility>#include <string>#include <sstream>#include <algorithm>#include <random>#include <cstdio>#include <cstdlib>#include <cstring>#include <ctime>#include <cmath>#include <cassert>#include <climits>#include <thread>#define FOR_LT(i, beg, end) for (int i = beg; i < end; i++)#define FOR_LE(i, beg, end) for (int i = beg; i <= end; i++)#define FOR_DW(i, beg, end) for (int i = beg; end <= i; i--)using namespace std;int count_win(int n, vector<int>& as, vector<int>& bs, int s, array<int, 4>& sel_a, array<int, 4>& sel_b, int w_c) {int ans = 0;if (s == n) {return (w_c > (n / 2)) ? 1 : 0;}FOR_LT(i_a, 0, n) {FOR_LT(i_b, 0, n) {if (find(sel_a.begin(), sel_a.end(), i_a) != sel_a.end()) continue;if (find(sel_b.begin(), sel_b.end(), i_b) != sel_b.end()) continue;bool b_w = (as[i_a] > bs[i_b]);int w_c_cur = w_c;if (b_w) {w_c_cur++;}sel_a[s] = i_a;sel_b[s] = i_b;ans += count_win(n, as, bs, s + 1, sel_a, sel_b, w_c_cur);sel_a[s] = -1;sel_b[s] = -1;}}return ans;}int count_all(int n) {int ans = 1;FOR_LE(i, 1, n) {ans *= i * i;}return ans;}int main(){int n; cin >> n;vector<int> as(n);for (auto& a : as) {cin >> a;}vector<int> bs(n);for (auto& b : bs) {cin >> b;}array<int, 4> sel_a = { -1, -1, -1, -1 };array<int, 4> sel_b = { -1, -1, -1, -1 };int win_cases = count_win(n, as, bs, 0, sel_a, sel_b, 0);int all_cases = count_all(n);cout << (double)win_cases / (double)all_cases << endl;return 0;}