結果
問題 | No.1904 Never giving up! |
ユーザー |
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提出日時 | 2022-04-15 22:10:40 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 2,892 bytes |
コンパイル時間 | 4,011 ms |
コンパイル使用メモリ | 263,676 KB |
最終ジャッジ日時 | 2025-01-28 18:19:09 |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 9 |
ソースコード
#include <atcoder/all>using namespace atcoder;#include <bits/stdc++.h>using namespace std;#define rep(i, n) for (int i = 0; i < (int)(n); i++)#define rep2(i,a,b) for (int i = (int)(a); i <= (int)(b); i++)#define all(v) v.begin(),v.end()#define inc(x,l,r) ((l)<=(x)&&(x)<(r))#define Unique(x) sort(all(x)), x.erase(unique(all(x)), x.end())typedef long long ll;#define int llusing ld = long double;using vi = vector<int>;using vs = vector<string>;using P = pair<int,int>;using vp = vector<P>;template<typename T> using priority_queue_greater = priority_queue<T, vector<T>, greater<T>>;template<typename T> ostream &operator<<(ostream &os,const vector<T> &v){rep(i,v.size())os<<v[i]<<(i+1!=v.size()?" ":"");return os;}template<typename T> istream &operator>>(istream& is,vector<T> &v){for(T &in:v)is>>in;return is;}template<class... T> void in(T&... a){(cin>> ... >> a);}template<class T> void out(T& a){cout <<a<< '\n';}template<class T,class... Ts> void out(const T&a, const Ts&... b){cout<< a;(cout<<...<<(cout<<' ',b));cout<<'\n';}#define INT(...) int __VA_ARGS__; in(__VA_ARGS__)#define STR(...) string __VA_ARGS__; in(__VA_ARGS__)#define pcnt __builtin_popcountint ceil(int x,int y){return x/y+!!(x%y);}bool ins(string s,string t){return s.find(t)!=string::npos;}P operator+ (const P &p, const P &q){ return P{p.first+q.first,p.second+q.second};}P operator- (const P &p, const P &q){ return P{p.first-q.first,p.second-q.second};}ostream &operator<< (ostream &os, const P &p){os << p.first <<" "<<p.second;return os;}ostream &operator<< (ostream &os, const modint1000000007 &m){os << m.val();return os;}ostream &operator<< (ostream &os, const modint998244353 &m){os << m.val();return os;}template<typename T> bool chmax(T &a, const T b) {if (a < b) {a = b; return true;} else return false; }template<typename T> bool chmin(T &a, const T b) {if (a > b) {a = b; return true;} else return false; }void yesno(bool ok){ cout<<(ok?"Yes":"No")<<endl;}vector<P> dxdy{{1,0},{0,1},{-1,0},{0,-1}};const int INF = 1e18;//using mint = modint1000000007;//using mint = modint998244353;vi compress(vi &a){vi vals = a;sort(vals.begin(),vals.end());vals.erase(unique(vals.begin(),vals.end()),vals.end());for(int i=0;i<a.size();i++){a[i] = lower_bound(vals.begin(),vals.end(),a[i])-vals.begin();}return vals;}signed main() {cin.tie(0);ios_base::sync_with_stdio(false);cout << fixed << setprecision(20);INT(n);vi a(n);cin>>a;compress(a);sort(all(a));map<int,int> mp;rep(i,n)mp[a[i]]++;int cu = 0;int ans = 1;int inv = 1;int b = n;rep(i,n){ans *= b;inv *= mp[cu];b--;mp[cu]--;if(mp[cu]==0)cu++;int g = gcd(ans,inv);ans /= g;inv /= g;}cout << ans <<endl;return 0;}