結果

問題 No.133 カードゲーム
ユーザー karinohito
提出日時 2023-03-23 01:34:34
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 2 ms / 5,000 ms
コード長 3,286 bytes
コンパイル時間 2,283 ms
コンパイル使用メモリ 202,304 KB
最終ジャッジ日時 2025-02-11 16:18:20
ジャッジサーバーID
(参考情報)
judge3 / judge1
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 4
other AC * 19
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 #
プレゼンテーションモードにする

#include <bits/stdc++.h>
using namespace std;
//#include <atcoder/all>
//using namespace atcoder;
using ll = long long;
using vll = vector<ll>;
using vvll = vector<vll>;
using vvvll = vector<vvll>;
#define all(A) A.begin(),A.end()
#define rep(i, n) for (ll i = 0; i < (ll) (n); i++)
template<class T>
bool chmax(T& p, T q, bool C = 1) {
if (C == 0 && p == q) {
return 1;
}
if (p < q) {
p = q;
return 1;
}
else {
return 0;
}
}
template<class T>
bool chmin(T& p, T q, bool C = 1) {
if (C == 0 && p == q) {
return 1;
}
if (p > q) {
p = q;
return 1;
}
else {
return 0;
}
}
ll modPow(long long a, long long n, long long p) {
if (n == 0) return 1; // 0
if (n == 1) return a % p;
if (n % 2 == 1) return (a * modPow(a, n - 1, p)) % p;
long long t = modPow(a, n / 2, p);
return (t * t) % p;
}
ll gcd(ll(a), ll(b)) {
if (a == 0)return b;
if (b == 0)return a;
ll c = a;
while (a % b != 0) {
c = a % b;
a = b;
b = c;
}
return b;
}
ll sqrtz(ll N) {
ll L = 0;
ll R = sqrt(N) + 10000;
while (abs(R - L) > 1) {
ll mid = (R + L) / 2;
if (mid * mid <= N)L = mid;
else R = mid;
}
return L;
}
/*
using mint = modint998244353;
using vm = vector<mint>;
using vvm = vector<vm>;
using vvvm = vector<vvm>;
*/
vector<ll> fact, factinv, inv;
const ll mod = 998244353;
void prenCkModp(ll n) {
fact.resize(n + 5);
factinv.resize(n + 5);
inv.resize(n + 5);
fact[0] = fact[1] = 1;
factinv[0] = factinv[1] = 1;
inv[1] = 1;
for (ll i = 2; i < n + 5; i++) {
fact[i] = (fact[i - 1] * i) % mod;
inv[i] = ((mod - ((inv[mod % i] * (mod / i))) % mod) + mod) % mod;
factinv[i] = (factinv[i - 1] * inv[i]) % mod;
}
}
ll nCk(ll n, ll k) {
if (n < k || k < 0) return 0;
return (fact[n] * ((factinv[k] * factinv[n - k]) % mod)) % mod;
}
bool P(string T) {
ll N = T.size();
rep(i, N)if (T[i] != T[N - 1 - i])return false;
return 1;
}
struct fenwick_tree {
ll n;
vll bit;
fenwick_tree(ll num) :bit(num + 1, 0) { n = num; }
void add(ll i, ll w) {
for (ll x = i + 1; x <= n; x += x & -x) {
bit[x - 1] += w;
}
}
ll sum(ll i) {
ll ret = 0;
for (ll x = i + 1; x > 0; x -= x & -x) {
ret += bit[x - 1];
}
return ret;
}
ll sum(ll L, ll R) {
return sum(R) - sum(L);
}
};
ll TE(vll A) {
ll res = 0;
ll N = A.size();
fenwick_tree fw(N);
rep(i, N) {
res += i - fw.sum(A[i]);
fw.add(A[i], 1);
}
return res;
}
int main() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
ll N;
cin>>N;
vll A(N),B(N);
rep(i,N)cin>>A[i];
rep(i,N)cin>>B[i];
ll p=0,q=0;
sort(all(A));
sort(all(B));
do{
sort(all(B));
do{
ll cnt=0;
rep(i,N){
if(A[i]>B[i])cnt++;
}
if(cnt>N-cnt)q++;
p++;
}while(next_permutation(all(B)));
}while(next_permutation(all(A)));
cout<<fixed<<setprecision(16)<<double(q)/double(p)<<endl;
}
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