結果
問題 | No.173 カードゲーム(Medium) |
ユーザー | torus711 |
提出日時 | 2015-03-26 23:57:47 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 1,981 ms / 3,000 ms |
コード長 | 3,289 bytes |
コンパイル時間 | 1,023 ms |
コンパイル使用メモリ | 107,472 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-29 01:11:24 |
合計ジャッジ時間 | 13,593 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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 | 47 ms
5,248 KB |
testcase_01 | AC | 205 ms
5,248 KB |
testcase_02 | AC | 1,660 ms
5,376 KB |
testcase_03 | AC | 1,668 ms
5,376 KB |
testcase_04 | AC | 1,628 ms
5,376 KB |
testcase_05 | AC | 1,418 ms
5,376 KB |
testcase_06 | AC | 1,184 ms
5,376 KB |
testcase_07 | AC | 1,071 ms
5,376 KB |
testcase_08 | AC | 1,061 ms
5,376 KB |
testcase_09 | AC | 1,981 ms
5,376 KB |
ソースコード
#include <iostream> #include <iomanip> #include <sstream> #include <vector> #include <string> #include <set> #include <unordered_set> #include <map> #include <unordered_map> #include <stack> #include <queue> #include <deque> #include <algorithm> #include <functional> #include <iterator> #include <limits> #include <numeric> #include <utility> #include <cmath> #include <cassert> #include <cstdio> using namespace std; using namespace placeholders; using LL = long long; using ULL = unsigned long long; using VI = vector< int >; using VVI = vector< vector< int > >; using VS = vector< string >; using SS = stringstream; using PII = pair< int, int >; using VPII = vector< pair< int, int > >; template < typename T = int > using VT = vector< T >; template < typename T = int > using VVT = vector< vector< T > >; template < typename T = int > using LIM = numeric_limits< T >; template < typename T > inline istream& operator>>( istream &s, vector< T > &v ){ for ( T &t : v ) { s >> t; } return s; } template < typename T > inline ostream& operator<<( ostream &s, const vector< T > &v ){ for ( int i = 0; i < int( v.size() ); ++i ){ s << ( " " + !i ) << v[i]; } return s; } template < typename T > inline T fromString( const string &s ) { T res; istringstream iss( s ); iss >> res; return res; }; template < typename T > inline string toString( const T &a ) { ostringstream oss; oss << a; return oss.str(); }; #define REP2( i, n ) REP3( i, 0, n ) #define REP3( i, m, n ) for ( int i = ( int )( m ); i < ( int )( n ); ++i ) #define GET_REP( a, b, c, F, ... ) F #define REP( ... ) GET_REP( __VA_ARGS__, REP3, REP2 )( __VA_ARGS__ ) #define FOR( e, c ) for ( auto &e : c ) #define ALL( c ) ( c ).begin(), ( c ).end() #define AALL( a, t ) ( t* )a, ( t* )a + sizeof( a ) / sizeof( t ) #define DRANGE( c, p ) ( c ).begin(), ( c ).begin() + p, ( c ).end() #define SZ( v ) ( (int)( v ).size() ) #define PB push_back #define EM emplace #define EB emplace_back #define BI back_inserter #define EXIST( c, e ) ( ( c ).find( e ) != ( c ).end() ) #define MP make_pair #define fst first #define snd second #define DUMP( x ) cerr << #x << " = " << ( x ) << endl #include <random> mt19937 rng; uniform_int_distribution< int > rng_idx( 1, 19 ); uniform_real_distribution< double > rng_p( 0, 1 ); constexpr int SIM = 1000000; int N; double Pa, Pb; inline int select( const double p, VI &as ) { if ( SZ( as ) == 1 ) { return as[0]; } else if ( rng_p( rng ) <= p ) { const int res = as[0]; as.erase( as.begin() ); return res; } else { rng_idx.param( uniform_int_distribution< int >::param_type( 1, SZ( as ) - 1 ) ); const int idx = rng_idx( rng ); const int res = as[ idx ]; as.erase( as.begin() + idx ); return res; } } inline bool sim( VI as, VI bs ) { int pt1 = 0, pt2 = 0; REP( i, N ) { const int a = select( Pa, as ); const int b = select( Pb, bs ); if ( a < b ) { pt2 += a + b; } if ( a > b ) { pt1 += a + b; } } return pt1 > pt2; } int main() { cin.tie( 0 ); ios::sync_with_stdio( false ); cin >> N >> Pa >> Pb; VI as( N ), bs( N ); cin >> as >> bs; sort( ALL( as ) ); sort( ALL( bs ) ); int win = 0; REP( i, SIM ) { win += sim( as, bs ); } cout << setprecision( 5 ) << fixed << 1. * win / SIM << endl; return 0; }