結果
問題 | No.2023 Tiling is Fun |
ユーザー |
|
提出日時 | 2022-08-04 01:09:44 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 6 ms / 2,000 ms |
コード長 | 6,231 bytes |
コンパイル時間 | 5,303 ms |
コンパイル使用メモリ | 289,832 KB |
最終ジャッジ日時 | 2025-01-30 17:25:07 |
ジャッジサーバーID (参考情報) |
judge4 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 18 |
ソースコード
#pragma GCC optimize("O3")#pragma GCC optimize("unroll-loops")#include<bits/stdc++.h>using namespace std;typedef long long ll;typedef long double ld;#define REP(i, n) for (int i = 0; i < (n); ++i)#define REPR(i, n) for (int i = n - 1; i >= 0; --i)#define FOR(i, m, n) for (int i = m; i < n; ++i)#define FORR(i, m, n) for (int i = m; i >= n; --i)#define ALL(v) (v).begin(),(v).end()#define ALLR(v) (v).rbegin(),(v).rend()#define SORT(v) sort(ALL(v))#define RSORT(v) sort(ALLR(v))#define REV(v) reverse(ALL(v))#define UNIQUE(x) SORT(x), x.erase(unique(ALL(x)), x.end())#define fi first#define se second#define PB push_back#define EB emplace_backusing pii = pair<int, int>;using pll = pair<ll, ll>;template <typename T> using vc = vector<T>;template <typename T> using vvc = vector<vc<T>>;template <typename T> using vvvc = vector<vvc<T>>;using vi = vc<int>;using vl = vc<ll>;using vpi = vc<pii>;using vpl = vc<pll>;// noimi#define INT(...) int __VA_ARGS__;IN(__VA_ARGS__)#define LL(...) ll __VA_ARGS__;IN(__VA_ARGS__)#define STR(...) string __VA_ARGS__;IN(__VA_ARGS__)#define DBL(...) double __VA_ARGS__;IN(__VA_ARGS__)#define VEC(type, name, size) vector<type> name(size);IN(name)#define VEC2(type, name1, name2, size) vector<type> name1(size), name2(size);for(int i = 0; i < size; i++) IN(name1[i], name2[i])#define VEC3(type, name1, name2, name3, size) vector<type> name1(size), name2(size), name3(size);for(int i = 0; i < size; i++) IN(name1[i], name2[i],name3[i])#define VEC4(type, name1, name2, name3, name4, size) vector<type> name1(size), name2(size), name3(size), name4(size); for(int i = 0; i < size; i++)IN(name1[i], name2[i], name3[i], name4[i]);#define VV(type, name, h, w) vector<vector<type>> name(h, vector<type>(w));IN(name)int scan() { return getchar(); }void scan(int &a) { cin >> a; }void scan(long long &a) { cin >> a; }void scan(char &a) { cin >> a; }void scan(double &a) { cin >> a; }void scan(string &a) { cin >> a; }template <class T, class S> void scan(pair<T, S> &p) { scan(p.first), scan(p.second); }template <class T> void scan(vector<T> &);template <class T> void scan(vector<T> &a) {for(auto &i : a) scan(i);}template <class T> void scan(T &a) { cin >> a; }void IN() {}template <class Head, class... Tail> void IN(Head &head, Tail &...tail) {scan(head);IN(tail...);}// tute7627template<typename T> using PQ = priority_queue<T>;template<typename T> using QP = priority_queue<T,vector<T>,greater<T>>;template<typename T>void stout(const T &v,ll h,ll w){for(ll i=0;i<h;i++){for(ll j=0;j<w;j++)cout<<v[i][j]<<" \n"[j==w-1];}};template<typename T>void stout(const T &v,ll n){for(ll i=0;i<n;i++)cout<<v[i]<<" \n"[i==n-1];};template<typename T>void stout(const vector<T>&v){stout(v,v.size());}template<typename T>void stout(const vector<vector<T>>&v){for(auto &vv:v)stout(vv,vv.size());}template<typename T>void debug(const T &v,ll h,ll w){for(ll i=0;i<h;i++){for(ll j=0;j<w;j++)cerr<<v[i][j]<<" \n"[j==w-1];}};template<typename T>void debug(const T &v,ll n){for(ll i=0;i<n;i++)cerr<<v[i]<<" \n"[i==n-1];};template<typename T>void debug(const vector<T>&v){debug(v,v.size());}template<typename T>void debug(const vector<vector<T>>&v){for(auto &vv:v)debug(vv,vv.size());}template<typename T>void debug(stack<T> st){while(!st.empty()){cerr<<st.top()<<" ";st.pop();}cerr<<endl;}template<typename T>void debug(queue<T> st){while(!st.empty()){cerr<<st.front()<<" ";st.pop();}cerr<<endl;}template<typename T>void debug(deque<T> st){while(!st.empty()){cerr<<st.front()<<" ";st.pop_front();}cerr<<endl;}template<typename T>void debug(PQ<T> st){while(!st.empty()){cerr<<st.top()<<" ";st.pop();}cerr<<endl;}template<typename T>void debug(QP<T> st){while(!st.empty()){cerr<<st.top()<<" ";st.pop();}cerr<<endl;}template<typename T>void debug(const set<T>&v){for(auto z:v)cerr<<z<<" ";cerr<<endl;}template<typename T>void debug(const multiset<T>&v){for(auto z:v)cerr<<z<<" ";cerr<<endl;}template<typename T,size_t size>void debug(const array<T, size> &a){for(auto z:a)cerr<<z<<" ";cerr<<endl;}template<typename T,typename V>void debug(const map<T,V>&v){for(auto z:v)cerr<<"["<<z.first<<"]="<<z.second<<",";cerr<<endl;}int popcount(ll x){return __builtin_popcountll(x);};int poplow(ll x){return __builtin_ctzll(x);};int pophigh(ll x){return 63 - __builtin_clzll(x);};void OUT() {cout << "\n";}template <class Head, class... Tail>void OUT(Head&& head, Tail&&... tail){cout << head;if(sizeof...(tail)) cout << " ";OUT(move(tail)...);}void ERR() {cerr << "\n";}template <class Head, class... Tail>void ERR(Head&& head, Tail&&... tail){cerr << head;if(sizeof...(tail)) cerr << " ";ERR(move(tail)...);}void fsp(int n){cout << fixed << setprecision(n);}template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }const ll INF=1LL<<60;const int inf=(1<<30)-1;const int mod=998244353;// const int mod=1e9+7;int dx[8]={1,0,-1,0,-1,-1,1,1};int dy[8]={0,1,0,-1,-1,1,-1,1};#include<atcoder/all>using namespace atcoder;using mint=modint998244353;// using mint=modint1000000007;template< typename T >struct Combination {vector< T > _fact, _rfact, _inv;Combination(int sz) : _fact(sz + 1), _rfact(sz + 1), _inv(sz + 1) {_fact[0] = _rfact[sz] = _inv[0] = 1;for(int i = 1; i <= sz; i++) _fact[i] = _fact[i - 1] * i;_rfact[sz] /= _fact[sz];for(int i = sz - 1; i >= 0; i--) _rfact[i] = _rfact[i + 1] * (i + 1);for(int i = 1; i <= sz; i++) _inv[i] = _rfact[i] * _fact[i - 1];}inline T fact(int k) const { return _fact[k]; }inline T rfact(int k) const { return _rfact[k]; }inline T inv(int k) const { return _inv[k]; }T P(int n, int r) const {if(r < 0 || n < r) return 0;return fact(n) * rfact(n - r);}T C(int p, int q) const {if(q < 0 || p < q) return 0;return fact(p) * rfact(q) * rfact(p - q);}T H(int n, int r) const {if(n < 0 || r < 0) return (0);return r == 0 ? 1 : C(n + r - 1, r);}};int main(){cin.tie(0);ios::sync_with_stdio(false);LL(a,b);Combination<mint> com(a+b);OUT(com.C(a+b-2,a-1).val());}