Submission #188195


Source Code Expand

#include <algorithm>
#include <bitset>
#include <cctype>
#include <complex>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <vector>

using namespace std;

inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}
template<class T> inline T sqr(T x) {return x*x;}

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<string> vs;
typedef pair<int, int> pii;
typedef long long ll;

#define all(a)  (a).begin(),(a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define pb push_back
#define mp make_pair
#define each(i,c) for(typeof((c).begin()) i=(c).begin(); i!=(c).end(); ++i)
#define exist(s,e) ((s).find(e)!=(s).end())
#define range(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,n)  range(i,0,n)
#define clr(a,b) memset((a), (b) ,sizeof(a))
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;

const double eps = 1e-10;
const double pi  = acos(-1.0);
const ll INF =1LL << 62;
const int inf =1 << 29;


long double fact[1010];
 
long double com(ll n,ll m){
    long double ans=1;
    ans=(fact[n]/fact[m])/fact[n-m];
    return ans;
}
 
void init(){
    fact[0]=1;
    for(int i=1;i<=1000;i++)
        fact[i]=(fact[i-1]*i);
}

int main(void){
	int n,d,x,y;
	cin >> n >> d >> x >> y;

	if(x%d||y%d){
		cout << 0 << endl;
		return 0;
	}

	init();
	x/=d; x=abs(x);
	y/=d; y=abs(y);
	
	long double res=0.0;
	
	for(int i=x;i<=n-y;i++){
		int lr=i;
		int ud=n-i;
		if((lr-x)%2==0&&(ud-y)%2==0)
			res+=com(n,lr)*com(lr,x+(lr-x)/2)*com(ud,y+(ud-y)/2);
	}
	
	//dump(res)

	rep(i,n) res/=4.0;

	cout.precision(10);
	cout << fixed << res << endl;
	return 0;
}

Submission Info

Submission Time
Task D - 大ジャンプ
User Hec
Language C++ (G++ 4.6.4)
Score 101
Code Size 2154 Byte
Status AC
Exec Time 23 ms
Memory 932 KB

Judge Result

Set Name part1 part2 All
Score / Max Score 90 / 90 10 / 10 1 / 1
Status
AC × 23
AC × 36
AC × 68
Set Name Test Cases
part1 test_1_151403858_0_0AB.txt, test_1_1_0_1AB.txt, test_1_1_2_0AB.txt, test_1_200416616_-430405070_-79858930AB.txt, test_1_320861287_0_0AB.txt, test_1_445441131_0_0AB.txt, test_2_91743015_0_183486030AB.txt, test_3_165357536_496072608_0AB.txt, test_3_357154050_-106436394_768502001AB.txt, test_3_721501125_-568833455_353553641AB.txt, test_3_893846474_0_0AB.txt, test_4_291388018_-291388018_0AB.txt, test_5_318547875_955643625_-637095750AB.txt, test_5_704387671_-704387671_0AB.txt, test_5_82323965_639854915_-688317394AB.txt, test_6_187422602_374845204_-374845204AB.txt, test_6_346164451_0_0AB.txt, test_6_99058019_194123640_-837769837AB.txt, test_7_166330212_166330212_-332660424AB.txt, test_7_89698746_448493730_-179397492AB.txt, test_8_10000000_-40000000_-40000000AB.txt, test_8_10000000_0_80000000AB.txt, test_8_10000000_80000000_0AB.txt
part2 test_10_227248639_454497278_0B.txt, test_11_692637325_-181424149_-938839075B.txt, test_13_260236679_-780710037_-520473358B.txt, test_13_269280357_807841071_269280357B.txt, test_13_96859935_0_-581159610B.txt, test_16_40374395_-40374395_-565241530B.txt, test_1_151403858_0_0AB.txt, test_1_1_0_1AB.txt, test_1_1_2_0AB.txt, test_1_200416616_-430405070_-79858930AB.txt, test_1_320861287_0_0AB.txt, test_1_445441131_0_0AB.txt, test_21_304856339_609712678_914569017B.txt, test_26_214390232_-857560928_428780464B.txt, test_2_91743015_0_183486030AB.txt, test_30_10000000_-300000000_0B.txt, test_30_10000000_0_300000000B.txt, test_30_10000000_150000000_-150000000B.txt, test_30_54228128_0_813421920B.txt, test_3_165357536_496072608_0AB.txt, test_3_357154050_-106436394_768502001AB.txt, test_3_721501125_-568833455_353553641AB.txt, test_3_893846474_0_0AB.txt, test_4_291388018_-291388018_0AB.txt, test_5_318547875_955643625_-637095750AB.txt, test_5_704387671_-704387671_0AB.txt, test_5_82323965_639854915_-688317394AB.txt, test_6_187422602_374845204_-374845204AB.txt, test_6_346164451_0_0AB.txt, test_6_99058019_194123640_-837769837AB.txt, test_7_166330212_166330212_-332660424AB.txt, test_7_89698746_448493730_-179397492AB.txt, test_8_10000000_-40000000_-40000000AB.txt, test_8_10000000_0_80000000AB.txt, test_8_10000000_80000000_0AB.txt, test_9_283198156_849594468_849594468B.txt
All test_1000_1000000_-500000000_500000000.txt, test_1000_1000000_0_-1000000000.txt, test_1000_1000000_1000000000_0.txt, test_1000_150305_97998860_-32315575.txt, test_1000_1_0_0.txt, test_1000_1_2_0.txt, test_1000_1_2_2.txt, test_1000_3308678_-800700076_-350719868.txt, test_1000_3608549_811923525_689232859.txt, test_1000_3728577_-145414503_-969430020.txt, test_1000_537976_11297496_224335992.txt, test_10_227248639_454497278_0B.txt, test_11_692637325_-181424149_-938839075B.txt, test_130_95365311_-667557177_-286095933.txt, test_131_18204705_-145637640_0.txt, test_13_260236679_-780710037_-520473358B.txt, test_13_269280357_807841071_269280357B.txt, test_13_96859935_0_-581159610B.txt, test_16_40374395_-40374395_-565241530B.txt, test_1_151403858_0_0AB.txt, test_1_1_0_1AB.txt, test_1_1_2_0AB.txt, test_1_200416616_-430405070_-79858930AB.txt, test_1_320861287_0_0AB.txt, test_1_445441131_0_0AB.txt, test_210_28974130_0_260767170.txt, test_217_321156_24407856_22480920.txt, test_21_304856339_609712678_914569017B.txt, test_26_214390232_-857560928_428780464B.txt, test_289_421462830_-487186374_-417635361.txt, test_2_91743015_0_183486030AB.txt, test_30_10000000_-300000000_0B.txt, test_30_10000000_0_300000000B.txt, test_30_10000000_150000000_-150000000B.txt, test_30_54228128_0_813421920B.txt, test_339_4475128_957677392_281933064.txt, test_3_165357536_496072608_0AB.txt, test_3_357154050_-106436394_768502001AB.txt, test_3_721501125_-568833455_353553641AB.txt, test_3_893846474_0_0AB.txt, test_480_402960_-131767920_-34654560.txt, test_4_291388018_-291388018_0AB.txt, test_507_3516183_-879045750_-253165176.txt, test_515_8606048_-25818144_8606048.txt, test_522_2286376_-230923976_-18291008.txt, test_5_318547875_955643625_-637095750AB.txt, test_5_704387671_-704387671_0AB.txt, test_5_82323965_639854915_-688317394AB.txt, test_676_198114948_0_792459792.txt, test_688_151937211_-286341114_10198771.txt, test_6_187422602_374845204_-374845204AB.txt, test_6_346164451_0_0AB.txt, test_6_99058019_194123640_-837769837AB.txt, test_71_367604060_367604060_0.txt, test_752_120973200_0_-725839200.txt, test_772_881340073_0_0.txt, test_777_125719576_-499451637_822057459.txt, test_7_166330212_166330212_-332660424AB.txt, test_7_89698746_448493730_-179397492AB.txt, test_839_166155061_0_-332310122.txt, test_839_923157_923157_564972084.txt, test_849_415705_290993500_0.txt, test_873_418406_2928842_322172620.txt, test_8_10000000_-40000000_-40000000AB.txt, test_8_10000000_0_80000000AB.txt, test_8_10000000_80000000_0AB.txt, test_981_159373724_-637494896_-159373724.txt, test_9_283198156_849594468_849594468B.txt
Case Name Status Exec Time Memory
sample_01.txt AC 21 ms 796 KB
sample_02.txt AC 21 ms 800 KB
sample_03.txt AC 21 ms 796 KB
test_1000_1000000_-500000000_500000000.txt AC 21 ms 932 KB
test_1000_1000000_0_-1000000000.txt AC 21 ms 932 KB
test_1000_1000000_1000000000_0.txt AC 21 ms 928 KB
test_1000_150305_97998860_-32315575.txt AC 21 ms 804 KB
test_1000_1_0_0.txt AC 21 ms 932 KB
test_1000_1_2_0.txt AC 20 ms 924 KB
test_1000_1_2_2.txt AC 21 ms 928 KB
test_1000_3308678_-800700076_-350719868.txt AC 21 ms 796 KB
test_1000_3608549_811923525_689232859.txt AC 21 ms 932 KB
test_1000_3728577_-145414503_-969430020.txt AC 21 ms 796 KB
test_1000_537976_11297496_224335992.txt AC 21 ms 804 KB
test_10_227248639_454497278_0B.txt AC 21 ms 800 KB
test_11_692637325_-181424149_-938839075B.txt AC 21 ms 764 KB
test_130_95365311_-667557177_-286095933.txt AC 21 ms 932 KB
test_131_18204705_-145637640_0.txt AC 21 ms 932 KB
test_13_260236679_-780710037_-520473358B.txt AC 21 ms 920 KB
test_13_269280357_807841071_269280357B.txt AC 22 ms 920 KB
test_13_96859935_0_-581159610B.txt AC 21 ms 804 KB
test_16_40374395_-40374395_-565241530B.txt AC 21 ms 800 KB
test_1_151403858_0_0AB.txt AC 20 ms 924 KB
test_1_1_0_1AB.txt AC 21 ms 800 KB
test_1_1_2_0AB.txt AC 21 ms 928 KB
test_1_200416616_-430405070_-79858930AB.txt AC 21 ms 924 KB
test_1_320861287_0_0AB.txt AC 21 ms 800 KB
test_1_445441131_0_0AB.txt AC 20 ms 804 KB
test_210_28974130_0_260767170.txt AC 20 ms 800 KB
test_217_321156_24407856_22480920.txt AC 21 ms 928 KB
test_21_304856339_609712678_914569017B.txt AC 20 ms 808 KB
test_26_214390232_-857560928_428780464B.txt AC 20 ms 804 KB
test_289_421462830_-487186374_-417635361.txt AC 21 ms 928 KB
test_2_91743015_0_183486030AB.txt AC 21 ms 924 KB
test_30_10000000_-300000000_0B.txt AC 20 ms 800 KB
test_30_10000000_0_300000000B.txt AC 20 ms 928 KB
test_30_10000000_150000000_-150000000B.txt AC 21 ms 848 KB
test_30_54228128_0_813421920B.txt AC 21 ms 932 KB
test_339_4475128_957677392_281933064.txt AC 21 ms 804 KB
test_3_165357536_496072608_0AB.txt AC 21 ms 928 KB
test_3_357154050_-106436394_768502001AB.txt AC 21 ms 676 KB
test_3_721501125_-568833455_353553641AB.txt AC 21 ms 676 KB
test_3_893846474_0_0AB.txt AC 21 ms 928 KB
test_480_402960_-131767920_-34654560.txt AC 22 ms 928 KB
test_4_291388018_-291388018_0AB.txt AC 21 ms 912 KB
test_507_3516183_-879045750_-253165176.txt AC 21 ms 928 KB
test_515_8606048_-25818144_8606048.txt AC 21 ms 804 KB
test_522_2286376_-230923976_-18291008.txt AC 21 ms 800 KB
test_5_318547875_955643625_-637095750AB.txt AC 21 ms 928 KB
test_5_704387671_-704387671_0AB.txt AC 21 ms 804 KB
test_5_82323965_639854915_-688317394AB.txt AC 21 ms 920 KB
test_676_198114948_0_792459792.txt AC 20 ms 928 KB
test_688_151937211_-286341114_10198771.txt AC 20 ms 924 KB
test_6_187422602_374845204_-374845204AB.txt AC 21 ms 932 KB
test_6_346164451_0_0AB.txt AC 20 ms 796 KB
test_6_99058019_194123640_-837769837AB.txt AC 20 ms 796 KB
test_71_367604060_367604060_0.txt AC 20 ms 804 KB
test_752_120973200_0_-725839200.txt AC 21 ms 760 KB
test_772_881340073_0_0.txt AC 22 ms 928 KB
test_777_125719576_-499451637_822057459.txt AC 20 ms 796 KB
test_7_166330212_166330212_-332660424AB.txt AC 21 ms 928 KB
test_7_89698746_448493730_-179397492AB.txt AC 21 ms 928 KB
test_839_166155061_0_-332310122.txt AC 20 ms 928 KB
test_839_923157_923157_564972084.txt AC 23 ms 748 KB
test_849_415705_290993500_0.txt AC 20 ms 804 KB
test_873_418406_2928842_322172620.txt AC 21 ms 808 KB
test_8_10000000_-40000000_-40000000AB.txt AC 20 ms 924 KB
test_8_10000000_0_80000000AB.txt AC 20 ms 800 KB
test_8_10000000_80000000_0AB.txt AC 21 ms 928 KB
test_981_159373724_-637494896_-159373724.txt AC 20 ms 928 KB
test_9_283198156_849594468_849594468B.txt AC 21 ms 932 KB