結果
問題 | No.1688 Veterinarian |
ユーザー | tanimani364 |
提出日時 | 2021-09-25 10:19:48 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 50 ms / 3,000 ms |
コード長 | 3,213 bytes |
コンパイル時間 | 2,078 ms |
コンパイル使用メモリ | 204,104 KB |
実行使用メモリ | 56,448 KB |
最終ジャッジ日時 | 2024-07-05 12:00:58 |
合計ジャッジ時間 | 2,840 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 2 ms
6,812 KB |
testcase_01 | AC | 5 ms
16,228 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 4 ms
6,144 KB |
testcase_07 | AC | 4 ms
5,632 KB |
testcase_08 | AC | 50 ms
56,448 KB |
testcase_09 | AC | 33 ms
54,784 KB |
testcase_10 | AC | 9 ms
12,800 KB |
testcase_11 | AC | 7 ms
9,984 KB |
testcase_12 | AC | 3 ms
5,376 KB |
testcase_13 | AC | 4 ms
6,272 KB |
testcase_14 | AC | 3 ms
5,376 KB |
testcase_15 | AC | 6 ms
8,832 KB |
testcase_16 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> //#include<boost/multiprecision/cpp_int.hpp> //#include<boost/multiprecision/cpp_dec_float.hpp> // #include <atcoder/all> using namespace std; #define rep(i, a) for (int i = (int)0; i < (int)a; ++i) #define repl(i, a) for (long long i = (long long)0; i < (long long)a; ++i) #define rrep(i, a) for (int i = (int)a; i > -1; --i) #define REP(i, a, b) for (int i = (int)a; i < (int)b; ++i) #define REPL(i, a, b) for (long long i = (long long)a; i < (long long)b; ++i) #define RREP(i, a, b) for (int i = (int)a; i > b; --i) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define popcount __builtin_popcount #define popcountll __builtin_popcountll #define fi first #define se second using ll = long long; constexpr ll mod = 1e9 + 7; constexpr ll mod_998244353 = 998244353; constexpr ll INF = 1LL << 60; // #pragma GCC target("avx2") // #pragma GCC optimize("O3") // #pragma GCC optimize("unroll-loops") //using lll=boost::multiprecision::cpp_int; // using Double=boost::multiprecision::number<boost::multiprecision::cpp_dec_float<128>>;//仮数部が1024桁 template <class T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; } template <class T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; } ll mypow(ll x, ll n, const ll &p = -1) { // x^nをmodで割った余り if (p != -1) { x = (x % p + p) % p; } ll ret = 1; while (n > 0) { if (n & 1) { if (p != -1) ret = (ret * x) % p; else ret *= x; } if (p != -1) x = (x * x) % p; else x *= x; n >>= 1; } return ret; } struct myrand{ random_device seed; mt19937 mt; myrand():mt(seed()){} int operator()(int a,int b){//[a,b) uniform_int_distribution<int>dist(a,b-1); return dist(mt); } }; // using namespace atcoder; //------------------------ //------------------------ //------------------------ //------------------------ //------------------------ double dp[51][51][51][51]; void solve() { int a,b,c,n; cin>>a>>b>>c>>n; rep(i,n+1)rep(j,a+1)rep(k,b+1)rep(x,c+1)dp[i][j][k][x]=0; dp[0][a][b][c]=1; rep(i,n){ rep(j,a+1){ rep(k,b+1){ rep(x,c+1){ if(dp[i][j][k][x]==0)continue; double prod=j*k+k*x+x*j; double div=(j+k+x)*(j+k+x-1)/2; prod/=div; dp[i+1][j][k][x]+=dp[i][j][k][x]*prod; prod=j*(j-1)/2; prod/=div; dp[i+1][j-1][k][x]+=dp[i][j][k][x]*prod; prod=k*(k-1)/2; prod/=div; dp[i+1][j][k-1][x]+=dp[i][j][k][x]*prod; prod=x*(x-1)/2; prod/=div; dp[i+1][j][k][x-1]+=dp[i][j][k][x]*prod; } } } } double white=0,black=0,brown=0; rep(A,a+1){ rep(B,b+1){ rep(C,c+1){ white+=dp[n][A][B][C]*(a-A); black+=dp[n][A][B][C]*(b-B); brown+=dp[n][A][B][C]*(c-C); } } } cout<<white<<" "<<black<<" "<<brown<<"\n"; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); cout << fixed << setprecision(15); solve(); return 0; }