結果
問題 | No.2683 Two Sheets |
ユーザー | momohara |
提出日時 | 2024-03-20 22:02:59 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 15 ms / 2,000 ms |
コード長 | 5,833 bytes |
コンパイル時間 | 5,315 ms |
コンパイル使用メモリ | 320,272 KB |
実行使用メモリ | 9,524 KB |
最終ジャッジ日時 | 2024-09-30 07:53:36 |
合計ジャッジ時間 | 6,090 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 11 ms
7,688 KB |
testcase_04 | AC | 4 ms
5,248 KB |
testcase_05 | AC | 11 ms
7,308 KB |
testcase_06 | AC | 9 ms
6,656 KB |
testcase_07 | AC | 8 ms
6,016 KB |
testcase_08 | AC | 13 ms
8,576 KB |
testcase_09 | AC | 9 ms
6,400 KB |
testcase_10 | AC | 13 ms
8,472 KB |
testcase_11 | AC | 11 ms
7,772 KB |
testcase_12 | AC | 10 ms
7,044 KB |
testcase_13 | AC | 15 ms
9,524 KB |
testcase_14 | AC | 14 ms
9,216 KB |
testcase_15 | AC | 10 ms
7,404 KB |
ソースコード
#include <atcoder/all> #include <bits/stdc++.h> using namespace std; using namespace atcoder; using ll = long long; using ull = unsigned long long; using ld = long double; using P = pair<ll, ll>; using tp = tuple<ll, ll, ll>; template <class T> using vec = vector<T>; template <class T> using vvec = vector<vec<T>>; #define all(hoge) (hoge).begin(), (hoge).end() #define en '\n' #define rep(i, m, n) for(ll i = (ll)(m); i < (ll)(n); ++i) #define rep2(i, m, n) for(ll i = (ll)(n)-1; i >= (ll)(m); --i) #define REP(i, n) rep(i, 0, n) #define REP2(i, n) rep2(i, 0, n) constexpr long long INF = 1LL << 60; constexpr int INF_INT = 1 << 25; // constexpr long long MOD = (ll)1e9 + 7; constexpr long long MOD = 998244353LL; static const ld pi = 3.141592653589793L; #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") 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; } struct Edge { int to, rev; ll cap; Edge(int _to, int _rev, ll _cap) : to(_to), rev(_rev), cap(_cap) {} }; typedef vector<Edge> Edges; typedef vector<Edges> Graph; void add_edge(Graph &G, int from, int to, ll cap, bool revFlag, ll revCap) { G[from].push_back(Edge(to, (int)G[to].size(), cap)); if(revFlag) G[to].push_back(Edge(from, (int)G[from].size() - 1, revCap)); } template <int mod> struct ModInt { int x; ModInt() : x(0) {} ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} ModInt &operator+=(const ModInt &p) { if((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p) { if((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p) { x = (int)(1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p) { *this *= p.inverse(); return *this; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; } bool operator==(const ModInt &p) const { return x == p.x; } bool operator!=(const ModInt &p) const { return x != p.x; } ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while(b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } ModInt pow(int64_t n) const { ModInt ret(1), mul(x); while(n > 0) { if(n & 1) ret *= mul; mul *= mul; n >>= 1; } return ret; } friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; } friend istream &operator>>(istream &is, ModInt &a) { int64_t t; is >> t; a = ModInt<mod>(t); return (is); } static int get_mod() { return mod; } }; using mint = ModInt<MOD>; template <class T> struct Combination { vector<T> fact_, inv_, finv_; constexpr Combination() {} constexpr Combination(int n) noexcept : fact_(n, 1), inv_(n, 1), finv_(n, 1) { init(n + 1); } constexpr void init(int n) noexcept { fact_.assign(n, 1), inv_.assign(n, 1), finv_.assign(n, 1); int MOD = fact_[0].get_mod(); for(int i = 2; i < n; i++) { fact_[i] = fact_[i - 1] * i; inv_[i] = -inv_[MOD % i] * (MOD / i); finv_[i] = finv_[i - 1] * inv_[i]; } } constexpr T nPr(int n, int k) const noexcept { if(n < k || n < 0 || k < 0) return 0; return fact_[n] * finv_[n - k]; } constexpr T nCr(int n, int k) const noexcept { if(n < k || n < 0 || k < 0) return 0; if(n < MOD) return fact_[n] * finv_[k] * finv_[n - k]; // Lucasの定理 T ret = 1; while(n || k) { ll _n = n % MOD, _k = k % MOD; n /= MOD; k /= MOD; ret *= nCr(_n, _k); } return ret; } constexpr T nHr(int n, int k) const noexcept { if(n <= 0 || k < 0) return 0; return nCr(n + k - 1, k); } constexpr T fact(int n) const noexcept { if(n < 0) return 0; return fact_[n]; // n! } constexpr T inv(int n) const noexcept { if(n < 0) return 0; return inv_[n]; // 1/n } constexpr T finv(int n) const noexcept { if(n < 0) return 0; return finv_[n]; // 1/n! } }; void solve() { ll h, w, a, b; cin >> h >> w >> a >> b; Combination<mint> com(h + w); mint all = mint(h - a + 1) * (w - b + 1) * (h - a + 1) * (w - b + 1); mint con = all * a * b * 2; mint dy = 0; rep(d, 1, a) { if(h - (a * 2 - d) + 1 > 0) dy += mint(h - (a * 2 - d) + 1) * d * 2; } dy += mint(h - a + 1) * a; mint dx = 0; rep(d, 1, b) { if(w - (b * 2 - d) + 1 > 0) dx += mint(w - (b * 2 - d) + 1) * d * 2; } dx += mint(w - b + 1) * b; con -= dx * dy; con /= all; cout << con << en; } int main() { ios::sync_with_stdio(false); cin.tie(0); cout.tie(0); // cout << fixed << setprecision(10); // ll t; // cin >> t; // REP(i, t - 1) { // solve(); // } solve(); return 0; }