結果

問題 No.574 正多面体サイコロ
ユーザー しらっ亭しらっ亭
提出日時 2017-10-07 02:25:14
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 252 ms / 2,000 ms
コード長 4,621 bytes
コンパイル時間 1,764 ms
コンパイル使用メモリ 176,048 KB
実行使用メモリ 11,700 KB
最終ジャッジ日時 2024-11-17 03:18:31
合計ジャッジ時間 3,249 ms
ジャッジサーバーID
（参考情報） 		judge1 / 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 8 ms
5,248 KB
testcase_01 AC 23 ms
5,248 KB
testcase_02 AC 10 ms
5,248 KB
testcase_03 AC 7 ms
5,248 KB
testcase_04 AC 2 ms
5,248 KB
testcase_05 AC 22 ms
5,248 KB
testcase_06 AC 2 ms
5,248 KB
testcase_07 AC 5 ms
5,248 KB
testcase_08 AC 2 ms
5,248 KB
testcase_09 AC 75 ms
6,024 KB
testcase_10 AC 148 ms
8,476 KB
testcase_11 AC 2 ms
5,248 KB
testcase_12 AC 10 ms
5,248 KB
testcase_13 AC 3 ms
5,248 KB
testcase_14 AC 10 ms
5,248 KB
testcase_15 AC 16 ms
5,248 KB
testcase_16 AC 2 ms
5,248 KB
testcase_17 AC 16 ms
5,248 KB
testcase_18 AC 119 ms
11,700 KB
testcase_19 AC 3 ms
5,248 KB
testcase_20 AC 3 ms
5,248 KB
testcase_21 AC 2 ms
5,248 KB
testcase_22 AC 252 ms
11,700 KB
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 <bits/stdc++.h>
using namespace std;

#define forr(x,arr) for(auto&& x:arr)
#define _overload3(_1,_2,_3,name,...) name
#define _rep2(i,n) _rep3(i,0,n)
#define _rep3(i,a,b) for(int i=int(a);i<int(b);++i)
#define rep(...) _overload3(__VA_ARGS__,_rep3,_rep2,)(__VA_ARGS__)
#define _rrep2(i,n) _rrep3(i,0,n)
#define _rrep3(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define rrep(...) _overload3(__VA_ARGS__,_rrep3,_rrep2,)(__VA_ARGS__)
#define all(x) (x).begin(),(x).end()
#define bit(n) (1LL<<(n))
#define sz(x) ((int)(x).size())
#define TEN(n) ((ll)(1e##n))
#define fst first
#define snd second

string DBG_DLM(int &i){return(i++==0?"":", ");}
#define DBG_B(exp){int i=0;os<<"{";{exp;}os<<"}";return os;}
template<class T>ostream&operator<<(ostream&os,vector<T>v);
template<class T>ostream&operator<<(ostream&os,set<T>v);
template<class T>ostream&operator<<(ostream&os,queue<T>q);
template<class T>ostream&operator<<(ostream&os,priority_queue<T>q);
template<class T,class K>ostream&operator<<(ostream&os,pair<T,K>p);
template<class T,class K>ostream&operator<<(ostream&os,map<T,K>mp);
template<class T,class K>ostream&operator<<(ostream&os,unordered_map<T,K>mp);
template<int I,class TPL>void DBG(ostream&os,TPL t){}
template<int I,class TPL,class H,class...Ts>void DBG(ostream&os,TPL t){os<<(I==0?"":", ")<<get<I>(t);DBG<I+1,TPL,Ts...>(os,t);}
template<class T,class K>void DBG(ostream&os,pair<T,K>p,string delim){os<<"("<<p.first<<delim<<p.second<<")";}
template<class...Ts>ostream&operator<<(ostream&os,tuple<Ts...>t){os<<"(";DBG<0,tuple<Ts...>,Ts...>(os,t);os<<")";return os;}
template<class T,class K>ostream&operator<<(ostream&os,pair<T,K>p){DBG(os,p,", ");return os;}
template<class T>ostream&operator<<(ostream&os,vector<T>v){DBG_B(forr(t,v){os<<DBG_DLM(i)<<t;});}
template<class T>ostream&operator<<(ostream&os,set<T>s){DBG_B(forr(t,s){os<<DBG_DLM(i)<<t;});}
template<class T>ostream&operator<<(ostream&os,queue<T>q){DBG_B(for(;q.size();q.pop()){os<<DBG_DLM(i)<<q.front();});}
template<class T>ostream&operator<<(ostream&os,priority_queue<T>q){DBG_B(for(;q.size();q.pop()){os<<DBG_DLM(i)<<q.top();});}
template<class T,class K>ostream&operator<<(ostream&os,map<T,K>m){DBG_B(forr(p,m){os<<DBG_DLM(i);DBG(os,p,"->");});}
template<class T,class K>ostream&operator<<(ostream&os,unordered_map<T,K>m){DBG_B(forr(p,m){os<<DBG_DLM(i);DBG(os,p,"->");});}
#define DBG_OVERLOAD(_1,_2,_3,_4,_5,_6,macro_name,...)macro_name
#define DBG_LINE(){char s[99];sprintf(s,"line:%3d | ",__LINE__);cerr<<s;}
#define DBG_OUTPUT(v){cerr<<(#v)<<"="<<(v);}
#define DBG1(v,...){DBG_OUTPUT(v);}
#define DBG2(v,...){DBG_OUTPUT(v);cerr<<", ";DBG1(__VA_ARGS__);}
#define DBG3(v,...){DBG_OUTPUT(v);cerr<<", ";DBG2(__VA_ARGS__);}
#define DBG4(v,...){DBG_OUTPUT(v);cerr<<", ";DBG3(__VA_ARGS__);}
#define DBG5(v,...){DBG_OUTPUT(v);cerr<<", ";DBG4(__VA_ARGS__);}
#define DBG6(v,...){DBG_OUTPUT(v);cerr<<", ";DBG5(__VA_ARGS__);}
#define DEBUG0(){DBG_LINE();cerr<<endl;}
#ifdef LOCAL
#define out(...){DBG_LINE();DBG_OVERLOAD(__VA_ARGS__,DBG6,DBG5,DBG4,DBG3,DBG2,DBG1)(__VA_ARGS__);cerr<<endl;}
#else
#define out(...)
#endif

using ll=long long;
using pii=pair<int,int>;using pll=pair<ll,ll>;using pil=pair<int,ll>;using pli=pair<ll,int>;
using vs=vector<string>;using vvs=vector<vs>;using vvvs=vector<vvs>;
using vb=vector<bool>;using vvb=vector<vb>;using vvvb=vector<vvb>;
using vi=vector<int>;using vvi=vector<vi>;using vvvi=vector<vvi>;
using vl=vector<ll>;using vvl=vector<vl>;using vvvl=vector<vvl>;
using vd=vector<double>;using vvd=vector<vd>;using vvvd=vector<vvd>;
using vpii=vector<pii>;using vvpii=vector<vpii>;using vvvpii=vector<vvpii>;
template<class A,class B>bool amax(A&a,const B&b){return b>a?a=b,1:0;}
template<class A,class B>bool amin(A&a,const B&b){return b<a?a=b,1:0;}
ll ri(){ll l;cin>>l;return l;} string rs(){string s;cin>>s;return s;}

void Main() {
	int f = ri(), n = ri(), t = ri();

	double unit = 1.0;
	rep(i, n) unit /= f;

	double ans = 0;

	rep(x, 1, f+1) {
		vvvd dp(n+1, vvd(n+1, vd(n+1)));
		dp[0][0][0] = unit * x;
		rep(i, n) {
			rep(j, n) {
				rep(k, n) {
					if (dp[i][j][k]) {
						rep(d, 1, f+1) {
							if (d < x)      dp[i+1][j+1][k] += dp[i][j][k];
							else if (d > x) dp[i+1][j][k+1] += dp[i][j][k];
							else            dp[i+1][j][k] += dp[i][j][k];
						}
					}
				}
			}
		}

		double ex = 0;
		rep(j, n) rep(k, n) {
			int l = n - j - k;
			if (l <= 0) continue;
			if (k + l >= t && k < t) {
				ex += dp[n][j][k];
			}
		}
		ans += ex;
	}

	cout << fixed << setprecision(10) << ans << endl;
}

signed main() {
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	Main();
	return 0;
}
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