結果
問題 | No.2527 H and W |
ユーザー | ゆにぽけ |
提出日時 | 2023-11-04 12:17:38 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 27 ms / 2,000 ms |
コード長 | 3,890 bytes |
コンパイル時間 | 1,343 ms |
コンパイル使用メモリ | 138,184 KB |
実行使用メモリ | 13,896 KB |
最終ジャッジ日時 | 2024-09-25 21:59:08 |
合計ジャッジ時間 | 2,454 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 13 ms
10,872 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 25 ms
11,032 KB |
testcase_05 | AC | 12 ms
5,376 KB |
testcase_06 | AC | 27 ms
11,136 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 15 ms
11,008 KB |
testcase_09 | AC | 15 ms
11,000 KB |
testcase_10 | AC | 14 ms
11,008 KB |
testcase_11 | AC | 12 ms
5,376 KB |
testcase_12 | AC | 22 ms
11,004 KB |
testcase_13 | AC | 22 ms
11,000 KB |
testcase_14 | AC | 15 ms
11,008 KB |
testcase_15 | AC | 11 ms
5,376 KB |
testcase_16 | AC | 15 ms
11,008 KB |
testcase_17 | AC | 15 ms
10,884 KB |
testcase_18 | AC | 14 ms
10,880 KB |
testcase_19 | AC | 19 ms
13,896 KB |
testcase_20 | AC | 17 ms
12,448 KB |
testcase_21 | AC | 14 ms
10,996 KB |
testcase_22 | AC | 14 ms
11,008 KB |
testcase_23 | AC | 16 ms
11,008 KB |
testcase_24 | AC | 11 ms
8,308 KB |
testcase_25 | AC | 14 ms
9,876 KB |
ソースコード
#include<iostream> #include<vector> #include<algorithm> #include<cstring> #include<cassert> #include<cmath> #include<ctime> #include<iomanip> #include<numeric> #include<stack> #include<queue> #include<map> #include<unordered_map> #include<set> #include<unordered_set> #include<bitset> #include<random> #include<functional> #include<utility> using namespace std; template<int m> struct modint { private: unsigned int value; static constexpr int mod() {return m;} public: constexpr modint(const long long x = 0) noexcept { long long y = x; if(y < 0 || y >= mod()) { y %= mod(); if(y < 0) y += mod(); } value = (unsigned int)y; } constexpr unsigned int val() noexcept {return value;} constexpr modint &operator+=(const modint &other) noexcept { value += other.value; if(value >= mod()) value -= mod(); return *this; } constexpr modint &operator-=(const modint &other) noexcept { unsigned int x = value; if(x < other.value) x += mod(); x -= other.value; value = x; return *this; } constexpr modint &operator*=(const modint &other) noexcept { unsigned long long x = value; x *= other.value; value = (unsigned int) (x % mod()); return *this; } constexpr modint &operator/=(const modint &other) noexcept { return *this *= other.inverse(); } constexpr modint inverse() const noexcept { assert(value); long long a = value,b = mod(),x = 1,y = 0; while(b) { long long q = a/b; a -= q*b; swap(a,b); x -= q*y; swap(x,y); } return modint(x); } constexpr modint power(long long N) const noexcept { assert(N >= 0); modint p = *this,ret = 1; while(N) { if(N & 1) ret *= p; p *= p; N >>= 1; } return ret; } constexpr modint operator+() {return *this;} constexpr modint operator-() {return modint() - *this;} constexpr modint &operator++(int) noexcept {return *this += 1;} constexpr modint &operator--(int) noexcept {return *this -= 1;} friend modint operator+(const modint& lhs, const modint& rhs) {return modint(lhs) += rhs;} friend modint operator-(const modint& lhs, const modint& rhs) {return modint(lhs) -= rhs;} friend modint operator*(const modint& lhs, const modint& rhs) {return modint(lhs) *= rhs;} friend modint operator/(const modint& lhs, const modint& rhs) {return modint(lhs) /= rhs;} friend ostream &operator<<(ostream &os,const modint &x) {return os << x.value;} }; using mint = modint<998244353>; //using mint = modint<1000000007>; template<class S> struct combination { vector<S> f,invf; combination(int N = 0) : f(1,1),invf(1,1) { update(N); } void update(int N) { if((int)f.size() > N) return; int pi = (int)f.size(); N = max(N,pi*2); f.resize(N+1),invf.resize(N+1); for(int i = pi;i <= N;i++) f[i] = f[i-1]*i; invf[N] = S(1)/f[N]; for(int i = N-1;i >= pi;i--) invf[i] = invf[i+1]*(i+1); } S factorial(int N) { update(N); return f[N]; } S invfactorial(int N) { update(N); return invf[N]; } S P(int N,int K) { assert(0 <= K && K <= N); update(N); return f[N]*invf[N-K]; } S C(int N,int K) { assert(0 <= K && K <= N); update(N); return f[N]*invf[K]*invf[N-K]; } S H(int N,int K) { if(!N) return K == 0 ? 1:0; return C(N+K-1,K); } }; combination<mint> C; #include<vector> #include<algorithm> vector<long long> divisors(long long n) { vector<long long> ret; for(long long i = 1;i*i <= n;i++) { if(n%i == 0) { ret.push_back(i); if(i != n/i) ret.push_back(n/i); } } sort(ret.begin(),ret.end()); return ret; } int H,W; long long K; void solve() { cin >> H >> W >> K; vector<long long> D = divisors(K); mint ans = 0; for(int d:D) { int i = H-d,j = W-K/d; if(i < 0 || j < 0 || i > H || j > W) continue; ans += C.C(H,i)*C.C(W,j); } cout << ans << endl; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int tt = 1; /* cin >> tt; */ while(tt--) solve(); }