結果
| 問題 |
No.1189 Sum is XOR
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-09-01 22:02:30 |
| 言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 47 ms / 2,000 ms |
| コード長 | 5,078 bytes |
| コンパイル時間 | 11,856 ms |
| コンパイル使用メモリ | 283,656 KB |
| 最終ジャッジ日時 | 2025-01-14 03:13:43 |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 21 |
ソースコード
#pragma GCC target("avx2")
#pragma GCC optimize("03")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std; typedef long double ld; typedef long long ll;
typedef unsigned long long ull;
#define endl "\n"
#define FOR(i,a,b) for(int i=(a);i<=(b);i++)
#define rep(i,n) for(int i=0;i<(n);i++)
#define PII pair<int, int>
#define PLL pair<ll, ll>
#define ALL(x) (x).begin(), (x).end()
int dx[] = {1, 0, -1, 0}; int dy[] = {0, 1, 0, -1};
constexpr int INF=1<<30;
constexpr ll LINF=1LL<<60;
constexpr ll mod=998244353;
template<class T>vector<T> vec(int len, T elem) { return vector<T>(len, elem); } // auto dp = vec(52, vec(103, vec(103, INF)));
template<class T>inline bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T>inline bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }
template<class T>inline int popcount(T a) {return __builtin_popcount(a);}
template<class T>inline T emod(T a, T p) { return (a%p + p) % p;}
template <typename T> istream &operator>>(istream &is, vector<T> &vec) { for (auto &v : vec) is >> v; return is; }
template <typename T> ostream &operator<<(ostream &os, const vector<T> &vec) {os << '\n'; for (auto v : vec) os << v << ' '; os << '\n'; return os;}
template <typename T> ostream &operator<<(ostream &os, const deque<T> &vec) { os << "deq["; for (auto v : vec) os << v << ','; os << ']'; return os; }
template <typename T> ostream &operator<<(ostream &os, const set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <typename T> ostream &operator<<(ostream &os, const unordered_set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <typename T> ostream &operator<<(ostream &os, const multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &pa) { os << '(' << pa.first << ',' << pa.second << ')'; return os; }
template <typename TK, typename TV> ostream &operator<<(ostream &os, const map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; }
template <typename TK, typename TV> ostream &operator<<(ostream &os, const unordered_map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; }
struct MyIO {
MyIO(){
cin.tie(0);
ios::sync_with_stdio(false);
cout << fixed << setprecision(15);
}
} IO_OI;
#ifdef LOCAL
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
cerr << " " << H;
debug_out(T...);
}
#define debug(...) \
cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
//-------------------
struct mint {
ll x;
mint(ll x=0):x(x%mod){}
bool operator==(const mint a)const{return x==a.x;}
bool operator!=(const mint a)const{return x!=a.x;}
bool operator>=(const mint a){return (x >= a.x)? 1: 0;}
bool operator<(const mint a){return !(*this>=a);}
bool operator>(const mint a){return (x > a.x)? 1:0;}
bool operator<=(const mint a){return !(*this>a);}
mint& operator+=(const mint a) {
if ((x += a.x) >= mod) x -= mod;
return *this;
}
mint& operator-=(const mint a) {
if ((x += mod-a.x) >= mod) x -= mod;
return *this;
}
mint& operator*=(const mint a) {
(x *= a.x) %= mod;
return *this;
}
mint& operator/=(const mint a) {
return (*this) *= a.inv();
}
mint operator+(const mint a) const {
mint res(*this);
return res+=a;
}
mint operator-(const mint a) const {
mint res(*this);
return res-=a;
}
mint operator*(const mint a) const {
mint res(*this);
return res*=a;
}
mint operator/(const mint a) const {
mint res(*this);
return res/=a;
}
mint pow(ll t) const {
if (!t) return 1;
mint a = pow(t>>1);
a *= a; //2 square
if (t&1) a *= *this;
return a;
}
// for prime mod
mint inv() const {
return pow(mod-2);
}
friend ostream& operator<<(ostream& os, const mint& m){
os << m.x;
return os;
}
};
int main() {
int n,k; cin>>n>>k;
unordered_map<int,int> mp;
rep(i,n) {
int x; cin>>x;
mp[x]++;
}
auto dp = vec(1<<10, vec(11, mint(0)));
dp[0][0] = 1;
if(k>10) {
cout << 0 << endl;
return 0;
}
rep(i, k) {
rep(j, 1<<10) {
for(auto [l,v]:mp) {
if((j&l)==0) {
dp[j|l][i+1] += dp[j][i] * v;
}
}
}
}
// debug(dp);
// debug(1|2);
mint ans = 0;
rep(i, 1<<10) {
ans = (ans + dp[i][k]);
}
FOR(i,1,k) ans /= i;
cout << ans << endl;
return 0;
}