結果
問題 |
No.2561 みんな大好きmod 998
|
ユーザー |
![]() |
提出日時 | 2023-12-04 14:57:09 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 517 ms / 4,000 ms |
コード長 | 4,724 bytes |
コンパイル時間 | 1,603 ms |
コンパイル使用メモリ | 138,788 KB |
最終ジャッジ日時 | 2025-02-18 07:10:38 |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 44 |
ソースコード
#include <iostream> // cout, endl, cin #include <string> // string, to_string, stoi #include <vector> // vector #include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound #include <utility> // pair, make_pair #include <tuple> // tuple, make_tuple #include <cstdint> // int64_t, int*_t #include <cstdio> // printf #include <map> // map #include <queue> // queue, priority_queue #include <set> // set #include <stack> // stack #include <deque> // deque #include <unordered_map> // unordered_map #include <unordered_set> // unordered_set #include <bitset> // bitset #include <cctype> // isupper, islower, isdigit, toupper, tolower #include <iomanip> #include <climits> #include <cmath> #include <functional> #include <numeric> #include <regex> #include <array> #include <fstream> #include <sstream> //#include<atcoder/modint> //using namespace atcoder; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define rep1(i, n) for (int i = 1; i <= (int)(n); i++) #define repl(i,l,r) for (int i = l; i < (int)(r); i++) #define all(a) a.begin(),a.end() #define Pii pair<int,int> #define Pll pair<long,long> #define INFi 1000000001 #define INFl 1000000000000000001 #define ll long long using namespace std; template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; } template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; } template<class T> void printArray(vector<T>&A){ for(T&a:A){ cout<<a<<" "; } cout<<endl; } template<class T> void printArrayln(vector<T>&A){ for(T&a:A){ cout<<a<<endl; } } template<class T1,class T2> std::ostream &operator<<(std::ostream &out, const pair<T1,T2> &A){ cout<<"{"<<A.first<<","<<A.second<<"}"; return out; } template<class T1,class T2> std::ostream &operator<<(std::ostream &out, const map<T1,T2> &M){ for(const auto&A:M){ cout<<"{"<<A.first<<","<<A.second<<"}"; } return out; } template<class T1> std::ostream &operator<<(std::ostream &out, const set<T1> &M){ cout<<"{"; for(const auto&A:M){ cout<<A<<", "; } cout<<"}"<<endl; return out; } template<class T1> std::ostream &operator<<(std::ostream &out, const multiset<T1> &M){ cout<<"{"; for(const auto&A:M){ cout<<A<<", "; } cout<<"}"<<endl; return out; } template<class T> std::ostream &operator<<(std::ostream &out, const vector<T> &A){ for(const T &a:A){ cout<<a<<" "; } return out; } void print() { cout << endl; } template <typename Head, typename... Tail> void print(Head H, Tail... T) { cout << H << " "; print(T...); } template<class T> std::istream &operator>>(std::istream &in,vector<T>&A){ for(T&a:A){ std::cin>>a; } return in; } vector<vector<int>> permutations(int N){ vector<int> array(N); vector<vector<int>> A(0); for(int i=0;i<N;i++)array[i]=i; do{ A.push_back(array); }while(next_permutation(array.begin(),array.end())); return A; } vector<vector<int>> permutation(int N,int U,bool h=false){ //0,1,2,3,...,N-1縺ョN蛟九°繧蔚蛟矩∈縺カ鬆・・ vector<vector<int>> A(0); auto fun = [&h,&A,&N,&U](auto &fun,vector<int> &B)->void{ if((int)B.size()==U){ auto C=B; do{ A.push_back(C); }while(next_permutation(C.begin(),C.end())); return; } int s = (h?0:-1); if(!B.empty())s = B.back(); for(int x=s+(h?0:1);x<N;x++){ B.push_back(x); fun(fun,B); B.pop_back(); } }; vector<int> C={}; fun(fun,C); return A; } vector<vector<int>> combination(int N,int U,bool h=false){ //0,1,2,3,...,N-1縺ョN蛟九°繧蔚蛟矩∈縺カ邨・∩蜷医o縺幃・・ vector<vector<int>> A(0); auto fun = [&h,&A,&N,&U](auto &fun,vector<int> &B)->void{ if((int)B.size()==U){ auto C=B; A.push_back(B); return; } int s = (h?0:-1); if(!B.empty())s = B.back(); for(int x=s+(h?0:1);x<N;x++){ B.push_back(x); fun(fun,B); B.pop_back(); } }; vector<int> C={}; fun(fun,C); return A; } int main(void){ std::cin.tie(0)->sync_with_stdio(0); long N,K;cin>>N>>K; vector<long> A(N); rep(i,N)cin>>A[i]; int cnt = 0; auto B = combination(N,K,false); for(auto&C:B){ long sum = 0; for(auto&c:C){ sum += A[c]; } if(sum%998244353<=sum%998)cnt++; } cout<<cnt%998<<endl; }