Submission #188320


Source Code Expand

// compile with "g++ XXX.cc -mno-cygwin -O2" in Cygwin

#include<iostream>
#include<sstream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<string>
#include<vector>
#include<cmath>
#include<set>
#include<map>
#include<stack>
#include<queue>
#include<numeric>
#include<functional>
#include<complex>
#include<bitset>
#include<cassert>

using namespace std;
#define BET(a,b,c) ((a)<=(b)&&(b)<(c))
#define FOR(i,n) for(int i=0,i##_end=(int(n));i<i##_end;i++)
#define FOR3(i,a,b) for(int i=a,i##_end=b;i<i##_end;i++)
#define FOR_EACH(it,v) for(__typeof(v.begin()) it=v.begin(),it_end=v.end() ; it != it_end ; it++)
#define SZ(x) (int)(x.size())
#define ALL(x) (x).begin(),(x).end()
#define MP make_pair
#define CLS(x,val) memset((x) , val , sizeof(x)) 
typedef long long ll_t;
typedef long double ld_t;
typedef vector<int> VI; 
typedef vector<VI> VVI;
typedef complex<int> xy_t;

template<typename T> void debug(T v , string delimiter = "\n")
{ for(__typeof(v.begin()) it=v.begin(),it_end=v.end() ; it != it_end ; it++) cout << *it << delimiter; cout << flush ;}

int dx[]  = {0,1,0,-1};
int dy[]  = {1,0,-1,0};
string ds = "SENW";

const double PI = 4.0*atan(1.0);

double memo[1111][1111];

double solve(int N, int X){
  if(X < 0) X = -X;
  if(N < X) return 0 ;
  if(N == 0){
    if(X == 0) return 1;
    return 0;
  }
  double& ret = memo[N][X];
  if(!isnan(ret)) return ret;
  double val = 0 ;
  
  val += solve(N-1, X-1) / 2.0;
  val += solve(N-1, X+1) / 2.0;

  return ret = val;
}

double memo_choose[1111][1111];

double choose(int s, int t){ // select t from s
  if(s < t) return 0;
  if(t < 0) return 0;
  if(s == 0){
    return t == 0 ? 1.0 : 0.0;
  }
  double& ret = memo_choose[s][t];
  if(!isnan(ret)) return ret;

  double val = choose(s-1, t) / 2.0 + choose(s-1, t-1) / 2.0;
  return ret = val;
}

int main() {
  int N, D;
  int X, Y;
  memset(memo_choose , -1 , sizeof(memo_choose));
  memset(memo , -1 , sizeof(memo));
  while(cin>>N>>D>>X>>Y){
    double ans = 0 ;
    if(X % D != 0 || Y % D != 0){
      ans = 0;
    }else {
      X /= D;
      Y /= D;
      for(int i=0;i<=N;i++){
        int j = N-i;
        double p = choose(N, i);
        if(p){
          ans += p * solve(i, X) * solve(j, Y);
        }
      }
    }
    printf("%.10f\n", ans);
  }
  return 0 ;
}

Submission Info

Submission Time
Task D - 大ジャンプ
User EmK
Language C++ (G++ 4.6.4)
Score 101
Code Size 2404 Byte
Status AC
Exec Time 88 ms
Memory 20136 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 48 ms 20000 KB
sample_02.txt AC 54 ms 19996 KB
sample_03.txt AC 54 ms 20000 KB
test_1000_1000000_-500000000_500000000.txt AC 86 ms 20116 KB
test_1000_1000000_0_-1000000000.txt AC 77 ms 20128 KB
test_1000_1000000_1000000000_0.txt AC 85 ms 20136 KB
test_1000_150305_97998860_-32315575.txt AC 84 ms 20084 KB
test_1000_1_0_0.txt AC 74 ms 20136 KB
test_1000_1_2_0.txt AC 85 ms 20136 KB
test_1000_1_2_2.txt AC 74 ms 20136 KB
test_1000_3308678_-800700076_-350719868.txt AC 77 ms 20136 KB
test_1000_3608549_811923525_689232859.txt AC 88 ms 20124 KB
test_1000_3728577_-145414503_-969430020.txt AC 87 ms 20128 KB
test_1000_537976_11297496_224335992.txt AC 76 ms 20084 KB
test_10_227248639_454497278_0B.txt AC 48 ms 20004 KB
test_11_692637325_-181424149_-938839075B.txt AC 48 ms 20012 KB
test_130_95365311_-667557177_-286095933.txt AC 49 ms 20072 KB
test_131_18204705_-145637640_0.txt AC 55 ms 20088 KB
test_13_260236679_-780710037_-520473358B.txt AC 49 ms 20012 KB
test_13_269280357_807841071_269280357B.txt AC 49 ms 20008 KB
test_13_96859935_0_-581159610B.txt AC 53 ms 20084 KB
test_16_40374395_-40374395_-565241530B.txt AC 47 ms 19992 KB
test_1_151403858_0_0AB.txt AC 54 ms 20004 KB
test_1_1_0_1AB.txt AC 49 ms 20000 KB
test_1_1_2_0AB.txt AC 49 ms 20008 KB
test_1_200416616_-430405070_-79858930AB.txt AC 49 ms 20008 KB
test_1_320861287_0_0AB.txt AC 49 ms 19992 KB
test_1_445441131_0_0AB.txt AC 52 ms 19992 KB
test_210_28974130_0_260767170.txt AC 55 ms 20004 KB
test_217_321156_24407856_22480920.txt AC 49 ms 20000 KB
test_21_304856339_609712678_914569017B.txt AC 48 ms 20008 KB
test_26_214390232_-857560928_428780464B.txt AC 48 ms 20004 KB
test_289_421462830_-487186374_-417635361.txt AC 52 ms 20008 KB
test_2_91743015_0_183486030AB.txt AC 54 ms 20000 KB
test_30_10000000_-300000000_0B.txt AC 49 ms 20004 KB
test_30_10000000_0_300000000B.txt AC 49 ms 20008 KB
test_30_10000000_150000000_-150000000B.txt AC 53 ms 19988 KB
test_30_54228128_0_813421920B.txt AC 52 ms 20004 KB
test_339_4475128_957677392_281933064.txt AC 51 ms 20124 KB
test_3_165357536_496072608_0AB.txt AC 54 ms 20004 KB
test_3_357154050_-106436394_768502001AB.txt AC 52 ms 20000 KB
test_3_721501125_-568833455_353553641AB.txt AC 49 ms 20004 KB
test_3_893846474_0_0AB.txt AC 55 ms 20080 KB
test_480_402960_-131767920_-34654560.txt AC 55 ms 20064 KB
test_4_291388018_-291388018_0AB.txt AC 49 ms 20004 KB
test_507_3516183_-879045750_-253165176.txt AC 55 ms 20008 KB
test_515_8606048_-25818144_8606048.txt AC 56 ms 20000 KB
test_522_2286376_-230923976_-18291008.txt AC 63 ms 20084 KB
test_5_318547875_955643625_-637095750AB.txt AC 49 ms 20008 KB
test_5_704387671_-704387671_0AB.txt AC 50 ms 19996 KB
test_5_82323965_639854915_-688317394AB.txt AC 51 ms 20008 KB
test_676_198114948_0_792459792.txt AC 68 ms 20016 KB
test_688_151937211_-286341114_10198771.txt AC 49 ms 20004 KB
test_6_187422602_374845204_-374845204AB.txt AC 48 ms 20004 KB
test_6_346164451_0_0AB.txt AC 49 ms 20008 KB
test_6_99058019_194123640_-837769837AB.txt AC 54 ms 20008 KB
test_71_367604060_367604060_0.txt AC 52 ms 20008 KB
test_752_120973200_0_-725839200.txt AC 71 ms 20132 KB
test_772_881340073_0_0.txt AC 72 ms 20136 KB
test_777_125719576_-499451637_822057459.txt AC 54 ms 19996 KB
test_7_166330212_166330212_-332660424AB.txt AC 48 ms 19992 KB
test_7_89698746_448493730_-179397492AB.txt AC 49 ms 20008 KB
test_839_166155061_0_-332310122.txt AC 76 ms 20072 KB
test_839_923157_923157_564972084.txt AC 68 ms 20132 KB
test_849_415705_290993500_0.txt AC 70 ms 20084 KB
test_873_418406_2928842_322172620.txt AC 79 ms 20132 KB
test_8_10000000_-40000000_-40000000AB.txt AC 52 ms 20000 KB
test_8_10000000_0_80000000AB.txt AC 55 ms 20004 KB
test_8_10000000_80000000_0AB.txt AC 49 ms 20004 KB
test_981_159373724_-637494896_-159373724.txt AC 73 ms 20136 KB
test_9_283198156_849594468_849594468B.txt AC 52 ms 20004 KB