結果

問題 No.538 N.G.S.
ユーザー torus711torus711
提出日時 2017-07-01 17:14:31
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 3,894 bytes
コンパイル時間 797 ms
コンパイル使用メモリ 103,060 KB
実行使用メモリ 6,824 KB
最終ジャッジ日時 2024-10-04 23:48:49
合計ジャッジ時間 15,330 ms
ジャッジサーバーID
(参考情報)
judge3 / judge5
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 162 ms
6,816 KB
testcase_01 AC 162 ms
6,820 KB
testcase_02 AC 163 ms
6,820 KB
testcase_03 AC 163 ms
6,816 KB
testcase_04 WA -
testcase_05 AC 164 ms
6,816 KB
testcase_06 AC 162 ms
6,816 KB
testcase_07 AC 159 ms
6,816 KB
testcase_08 AC 162 ms
6,816 KB
testcase_09 AC 162 ms
6,820 KB
testcase_10 AC 161 ms
6,820 KB
testcase_11 AC 163 ms
6,820 KB
testcase_12 AC 162 ms
6,816 KB
testcase_13 WA -
testcase_14 WA -
testcase_15 WA -
testcase_16 WA -
testcase_17 AC 184 ms
6,820 KB
testcase_18 WA -
testcase_19 WA -
testcase_20 WA -
testcase_21 WA -
testcase_22 WA -
testcase_23 WA -
testcase_24 WA -
testcase_25 WA -
testcase_26 WA -
testcase_27 WA -
testcase_28 AC 161 ms
6,820 KB
testcase_29 AC 162 ms
6,816 KB
testcase_30 AC 161 ms
6,816 KB
testcase_31 AC 161 ms
6,816 KB
testcase_32 AC 160 ms
6,820 KB
testcase_33 AC 163 ms
6,816 KB
testcase_34 AC 164 ms
6,816 KB
testcase_35 AC 164 ms
6,816 KB
testcase_36 AC 165 ms
6,816 KB
testcase_37 AC 159 ms
6,820 KB
testcase_38 AC 164 ms
6,820 KB
testcase_39 AC 158 ms
6,816 KB
testcase_40 WA -
testcase_41 WA -
testcase_42 WA -
testcase_43 WA -
testcase_44 AC 175 ms
6,816 KB
testcase_45 AC 163 ms
6,816 KB
testcase_46 AC 180 ms
6,816 KB
testcase_47 WA -
testcase_48 WA -
testcase_49 WA -
testcase_50 WA -
testcase_51 WA -
testcase_52 AC 156 ms
6,816 KB
testcase_53 WA -
testcase_54 WA -
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 <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 <type_traits>
#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 ISS = istringstream;
using OSS = ostringstream;
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; }

void in_impl(){};
template < typename T, typename... TS > void in_impl( T &head, TS &... tail ){ cin >> head; in_impl( tail ... ); }
#define IN( T, ... ) T __VA_ARGS__; in_impl( __VA_ARGS__ );

template < typename T > struct getv_fmt;
template <> struct getv_fmt<       int >{ static constexpr const char *fmt = "%d"; };
template <> struct getv_fmt< long long >{ static constexpr const char *fmt = "%lld"; };
template < typename T > void getv( std::vector< T > &v ){ for_each( begin( v ), end( v ), []( T &a ){ scanf( getv_fmt< T >::fmt, &a ); } ); };

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 NUMBERED( name, number ) NUMBERED2( name, number )
#define NUMBERED2( name, number ) name ## _ ## number
#define REP1( n ) REP2( NUMBERED( REP_COUNTER, __LINE__ ), n )
#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, REP1 )( __VA_ARGS__ )
#define FOR( e, c ) for ( auto &&e : c )
#define ALL( c ) begin( c ), end( c )
#define AALL( a ) ( remove_all_extents< decltype( a ) >::type * )a, ( remove_all_extents< decltype( a ) >::type * )a + sizeof( a ) / sizeof( remove_all_extents< decltype( a ) >::type )
#define DRANGE( c, p ) begin( c ), begin( c ) + ( p ), end( c )

#define SZ( v ) ( (int)( v ).size() )
#define EXIST( c, e ) ( ( c ).find( e ) != ( c ).end() )

template < typename T > inline bool chmin( T &a, const T &b ){ if ( b < a ) { a = b; return true; } return false; }
template < typename T > inline bool chmax( T &a, const T &b ){ if ( a < b ) { a = b; return true; } return false; }

#define PB push_back
#define EM emplace
#define EB emplace_back
#define BI back_inserter

#define MP make_pair
#define fst first
#define snd second

#define DUMP( x ) cerr << #x << " = " << ( x ) << endl

bool eq( const double a, const double b )
{
	return abs( a - b ) <= 1e-12;
}

int main()
{
	cin.tie( 0 );
	ios::sync_with_stdio( false );
	cout << setprecision( 12 ) << fixed;

	VI B( 3 );
	cin >> B;

	for ( double d = -10'000'000; d <= 10'000'000; d += 0.5 )
	{
		const double det = d * d - 4 * B[0] * ( d - B[2] );
		if ( det < 0 )
		{
			continue;
		}

		for ( const int sgn : { 1, -1 } )
		{
			const double r = ( -d + sgn * sqrt( det ) ) / ( 2 * B[0] );
			if ( eq( B[0] * r + d, B[1] ) && eq( B[1] * r + d, B[2] ) )
			{
				cout << LL( round( B[2] * r + d ) ) << endl;
				return 0;
			}
		}
	}

	return 0;
}
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