結果
| 問題 |
No.1688 Veterinarian
|
| コンテスト | |
| ユーザー |
suta28407928
|
| 提出日時 | 2021-09-24 21:52:26 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 51 ms / 3,000 ms |
| コード長 | 3,589 bytes |
| コンパイル時間 | 2,028 ms |
| コンパイル使用メモリ | 179,768 KB |
| 実行使用メモリ | 99,300 KB |
| 最終ジャッジ日時 | 2024-07-05 10:27:39 |
| 合計ジャッジ時間 | 2,790 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 14 |
ソースコード
#pragma GCC ta g("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define DEBUG
#ifdef DEBUG
template <class T, class U>
ostream &operator<<(ostream &os, const pair<T, U> &p) {
os << '(' << p.first << ',' << p.second << ')';
return os;
}
template <class T> ostream &operator<<(ostream &os, const vector<T> &v) {
os << '{';
for(int i = 0; i < (int)v.size(); i++) {
if(i) { os << ','; }
os << v[i];
}
os << '}';
return os;
}
void debugg() { cerr << endl; }
template <class T, class... Args>
void debugg(const T &x, const Args &... args) {
cerr << " " << x;
debugg(args...);
}
#define debug(...) \
cerr << __LINE__ << " [" << #__VA_ARGS__ << "]: ", debugg(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
using namespace std;
typedef long long ll;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<char> vc;
typedef vector<string> vs;
typedef vector<bool> vb;
typedef vector<double> vd;
typedef pair<ll,ll> P;
typedef pair<int,int> pii;
typedef vector<P> vpl;
typedef tuple<ll,ll,ll> tapu;
#define rep(i,n) for(int i=0; i<(n); i++)
#define REP(i,a,b) for(int i=(a); i<(b); i++)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
const int inf = (1<<30)-1;
const ll linf = 1LL<<61;
const int MAX = 510000;
int dy[8] = {0,1,0,-1,1,-1,-1,1};
int dx[8] = {-1,0,1,0,1,-1,1,-1};
const double pi = acos(-1);
const double eps = 1e-7;
template<typename T1,typename T2> inline bool chmin(T1 &a,T2 b){
if(a>b){
a = b; return true;
}
else return false;
}
template<typename T1,typename T2> inline bool chmax(T1 &a,T2 b){
if(a<b){
a = b; return true;
}
else return false;
}
template<typename T> inline void print(T &a){
int sz = a.size();
for(auto itr = a.begin(); itr != a.end(); itr++){
cout << *itr;
sz--;
if(sz) cout << " ";
}
cout << "\n";
}
template<typename T1,typename T2> inline void print2(T1 a, T2 b){
cout << a << " " << b << "\n";
}
template<typename T1,typename T2,typename T3> inline void print3(T1 a, T2 b, T3 c){
cout << a << " " << b << " " << c << "\n";
}
void mark() {cout << "#" << "\n";}
ll pcount(ll x) {return __builtin_popcountll(x);}
//#include <atcoder/maxflow>
//using namespace atcoder;
//const int mod = 1e9 + 7;
const int mod = 998244353;
using tud = tuple<double,double,double>;
array<double,3> dp[55][55][55][55];
bool v[55][55][55][55];
array<double,3> f(int n, int a, int b, int c){
if(n == 0) return {0,0,0};
if(v[n][a][b][c]) return dp[n][a][b][c];
v[n][a][b][c] = true;
if(a == 1 && b == 1 && c == 1) return dp[n][a][b][c] = {0,0,0};
array<double,3> res = {0,0,0};
ll s = a+b+c;
ll al = s * (s-1) / 2;
if(a >= 2){
auto r = f(n-1,a-1,b,c);
r[0] += 1;
rep(i,3) res[i] += r[i] * a * (a-1) / 2 / al;
}
if(b >= 2){
auto r = f(n-1,a,b-1,c);
r[1] += 1;
rep(i,3) res[i] += r[i] * b * (b-1) / 2 / al;
}
if(c >= 2){
auto r = f(n-1,a,b,c-1);
r[2] += 1;
rep(i,3) res[i] += r[i] * c * (c-1) / 2 / al;
}
auto r = f(n-1,a,b,c);
rep(i,3) res[i] += r[i] * (al - a*(a-1)/2 - b*(b-1)/2 - c*(c-1)/2) / al;
return dp[n][a][b][c] = res;
}
int main(){
int a,b,c,n; cin >> a >> b >> c >> n;
auto res = f(n,a,b,c);
printf("%.10f %.10f %.10f\n",res[0],res[1],res[2]);
}
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