結果

問題 No.108 トリプルカードコンプ
ユーザー uchiiiiuchiiii
提出日時 2022-08-07 17:15:38
言語 C++17(clang)
(17.0.6 + boost 1.83.0)
結果
AC  
実行時間 24 ms / 5,000 ms
コード長 5,049 bytes
コンパイル時間 3,321 ms
コンパイル使用メモリ 156,800 KB
実行使用メモリ 20,096 KB
最終ジャッジ日時 2024-09-17 10:17:56
合計ジャッジ時間 4,122 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
6,816 KB
testcase_01 AC 1 ms
6,944 KB
testcase_02 AC 2 ms
6,944 KB
testcase_03 AC 1 ms
6,940 KB
testcase_04 AC 1 ms
6,940 KB
testcase_05 AC 1 ms
6,940 KB
testcase_06 AC 1 ms
6,940 KB
testcase_07 AC 24 ms
19,968 KB
testcase_08 AC 23 ms
19,968 KB
testcase_09 AC 24 ms
19,840 KB
testcase_10 AC 23 ms
19,968 KB
testcase_11 AC 24 ms
20,096 KB
testcase_12 AC 2 ms
6,944 KB
testcase_13 AC 4 ms
6,940 KB
testcase_14 AC 4 ms
6,940 KB
testcase_15 AC 3 ms
6,944 KB
testcase_16 AC 4 ms
6,940 KB
testcase_17 AC 4 ms
6,940 KB
testcase_18 AC 22 ms
18,048 KB
testcase_19 AC 19 ms
17,152 KB
testcase_20 AC 23 ms
19,584 KB
testcase_21 AC 23 ms
19,584 KB
testcase_22 AC 20 ms
17,536 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 <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cctype>
#include <cfenv>
#include <cfloat>
#include <chrono>
#include <cinttypes>
#include <climits>
#include <cmath>
#include <complex>
#include <cstdarg>
#include <cstddef>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <fstream>
#include <functional>
#include <initializer_list>
#include <iomanip>
#include <ios>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <streambuf>
#include <string>
#include <tuple>
#include <type_traits>
#include <typeinfo>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std; using ld = long double; using ll = long long;
using ull = unsigned long long;
#define endl "\n"
#define FOR(i,a,b) for(int i=(a);i<=(b);i++)
#define rep(i,n) for(int i=0;i<(n);i++)
#define rrep(i,n) for(int i=(n)-1;i>=0;i--)
#define REP(i,a,b) for(int i=(a);i<(b);i++)
#define PII pair<int, int>
#define PLL pair<ll, ll>
#define ALL(x) (x).begin(), (x).end()
#define QUERY int num_query;cin>>num_query; while(num_query--)
// int dx[] = {1, 0, -1, 0}; int dy[] = {0, 1, 0, -1};
constexpr int INF=1<<30;
constexpr ll LINF=1LL<<60; 
constexpr ll mod=1e9+7;
void flush() {cout<<flush;}
template <typename T> static constexpr T inf = numeric_limits<T>::max()/2;
template<class T>vector<T> vec(int len, T elem) { return vector<T>(len, elem); } // auto dp = vec(52, vec(103, vec(103, INF)));
template<class T>inline bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T>inline bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }
template<class T>inline int popcount(T a) {return __builtin_popcountll(a);}
template<class T>inline T emod(T a, T p) { return (a%p + p) % p;}
template <typename T, size_t N> ostream &operator<<(ostream &os, const array<T, N> &arr) { os << '{'; for (auto v: arr) os << v << ','; cout << '}'; 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> 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 << '\n'; for (auto v : vec) os << v << ' '; os << '\n'; 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; }
struct MyIO {
    MyIO(){
        cin.tie(0); 
        ios::sync_with_stdio(false); 
        cout << fixed << setprecision(15);
    }
} IO_OI;
#ifdef LOCAL
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << " " << H;
    debug_out(T...);
}
#define debug(...) \
    cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#pragma GCC target("avx2")
#pragma GCC optimize("03")
#pragma GCC optimize("unroll-loops")
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
//-------------------
int main() {
	int n;cin>>n;
	vector<int> A(n);cin>>A;

	vector<int> cnt(4, 0);
	rep(i, n) {
		if (A[i] >= 3) cnt[3] += 1;
		else cnt[A[i]] += 1;
	}

	auto dp = vec(n+1, vec(n+1, vec(n+1, (ld) 0.0)));

	rep(i, n+1) {
		rep(j, n+1) {
			rep(k, n+1) {
				if (i == 0 and j == 0 and k == 0) continue;
				if (i > 0 and j < n) dp[i][j][k] += i * dp[i-1][j+1][k];
				if (j > 0 and k < n) dp[i][j][k] += j * dp[i][j-1][k+1];
				if (k > 0) dp[i][j][k] += k * dp[i][j][k-1];
				dp[i][j][k] += n;
				dp[i][j][k] /= (i + j + k);
			}
		}
	}

	debug(dp[0][0]);

	cout << dp[cnt[0]][cnt[1]][cnt[2]] << endl;
}
0