結果
問題 |
No.1861 Required Number
|
ユーザー |
![]() |
提出日時 | 2022-03-04 22:50:30 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,877 bytes |
コンパイル時間 | 4,655 ms |
コンパイル使用メモリ | 267,112 KB |
最終ジャッジ日時 | 2025-01-28 06:05:07 |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 2 WA * 44 |
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 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 ll using 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_popcount int 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; set<int> use; int k; bool f(int x){ if(use.count(k))return false; set<int> dp={0}; for(auto e:use){ set<int> pd; for(auto p:dp){ pd.insert(e+p); pd.insert(p); } dp = pd; if(dp.count(k))return false; } return true; } signed main() { cin.tie(0); ios_base::sync_with_stdio(false); cout << fixed << setprecision(20); int n;cin>>n>>k; vi a(n); cin>>a; map<int,int> mp; for(auto e:a)mp[e]++; set<int> s; for(auto [key,val]:mp){ if(val==1)s.insert(key); rep(i,val)if(key*(i+1)<=k)use.insert(key*(i+1)); } int ans = 0; for(auto e:s){ use.erase(e); if(f(e)){ ans++; } use.insert(e); } cout << (ans>0?ans:-1) <<endl; return 0; }