結果
問題 | No.2802 Pill Bug in Grid Maze |
ユーザー | 👑 Nachia |
提出日時 | 2024-07-11 23:55:45 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 76 ms / 2,000 ms |
コード長 | 5,847 bytes |
コンパイル時間 | 1,242 ms |
コンパイル使用メモリ | 103,972 KB |
実行使用メモリ | 6,400 KB |
最終ジャッジ日時 | 2024-07-11 23:55:49 |
合計ジャッジ時間 | 3,348 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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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
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 5 ms
5,376 KB |
testcase_08 | AC | 76 ms
6,400 KB |
testcase_09 | AC | 5 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 5 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 7 ms
5,376 KB |
testcase_18 | AC | 4 ms
5,376 KB |
testcase_19 | AC | 5 ms
5,376 KB |
testcase_20 | AC | 27 ms
5,376 KB |
testcase_21 | AC | 53 ms
5,376 KB |
testcase_22 | AC | 27 ms
5,376 KB |
testcase_23 | AC | 64 ms
5,376 KB |
testcase_24 | AC | 32 ms
5,376 KB |
testcase_25 | AC | 13 ms
5,376 KB |
testcase_26 | AC | 12 ms
5,376 KB |
testcase_27 | AC | 8 ms
5,376 KB |
testcase_28 | AC | 26 ms
5,376 KB |
testcase_29 | AC | 44 ms
5,376 KB |
testcase_30 | AC | 9 ms
5,376 KB |
testcase_31 | AC | 75 ms
5,888 KB |
testcase_32 | AC | 65 ms
5,376 KB |
testcase_33 | AC | 21 ms
5,376 KB |
testcase_34 | AC | 33 ms
5,376 KB |
ソースコード
#ifdef NACHIA #define _GLIBCXX_DEBUG #else #define NDEBUG #endif #include <iostream> #include <string> #include <vector> #include <algorithm> #include <utility> #include <queue> #include <array> #include <cmath> #include <atcoder/modint> #include <bitset> namespace nachia{ // reference // https://drive.google.com/file/d/16g1tfSHUU4NXNTDgaD8FSA1WB4FtJCyV/edit class NimberManager{ private: using u32 = unsigned int; using u64 = unsigned long long; std::vector<u32> precalc1; void fill_precalc1(){ precalc1.assign(1 << 16, 0); precalc1[(1 << 8) ^ 1] = 1; for(int dd=1; dd<8; dd<<=1){ int d = 1 << dd; int c = d >> 1; for(int a0=0; a0<d; a0++) for(int a1=0; a1<d; a1++) if(a0 | a1) { for(int b0=0; b0<d; b0++) for(int b1=0; b1<d; b1++) if(b0 | b1) { u64 buf = 0; buf ^= precalc1[(a1 << 8) ^ b1]; buf ^= precalc1[(a1 << 8) ^ b0]; buf ^= precalc1[(a0 << 8) ^ b1]; buf <<= dd; buf ^= precalc1[(c << 8) ^ precalc1[(a1 << 8) ^ b1]]; buf ^= precalc1[(a0 << 8) ^ b0]; precalc1[(((a1 << dd) ^ a0) << 8) ^ ((b1 << dd) ^ b0)] = buf; } } } } u64 product_full(u64 a, u64 b, int d = 6) noexcept { if(!(a && b)) return 0; if(d == 3){ return precalc1[(a << 8) ^ b]; } d--; u64 lm = ((u64)1 << (1 << d)) - 1; u64 us = ((u64)1 << d); u64 buf = 0; u64 a1b1 = product_full(a >> us, b >> us, d); u64 a2b2 = product_full(a & lm, b & lm, d); u64 aabb = product_full((a & lm) ^ (a >> us), (b & lm) ^ (b >> us), d); buf ^= (aabb ^ a2b2); buf <<= us; buf ^= a2b2; buf ^= product_full((u64)1 << (us - 1), a1b1, d); return buf; } public: NimberManager(){ fill_precalc1(); } unsigned long long product(unsigned long long a, unsigned long long b) noexcept { return product_full(a,b); } }; } // namespace nachia namespace nachia{ int Popcount(unsigned long long c) noexcept { #ifdef __GNUC__ return __builtin_popcountll(c); #else c = (c & (~0ull/3)) + ((c >> 1) & (~0ull/3)); c = (c & (~0ull/5)) + ((c >> 2) & (~0ull/5)); c = (c & (~0ull/17)) + ((c >> 4) & (~0ull/17)); c = (c * (~0ull/257)) >> 56; return c; #endif } // please ensure x != 0 int MsbIndex(unsigned long long x) noexcept { #ifdef __GNUC__ return 63 - __builtin_clzll(x); #else using u64 = unsigned long long; int q = (x >> 32) ? 32 : 0; auto m = x >> q; constexpr u64 hi = 0x8888'8888; constexpr u64 mi = 0x1111'1111; m = (((m | ~(hi - (m & ~hi))) & hi) * mi) >> 35; m = (((m | ~(hi - (x & ~hi))) & hi) * mi) >> 31; q += (m & 0xf) << 2; q += 0x3333'3333'2222'1100 >> (((x >> q) & 0xf) << 2) & 0xf; return q; #endif } // please ensure x != 0 int LsbIndex(unsigned long long x) noexcept { #ifdef __GNUC__ return __builtin_ctzll(x); #else return MsbIndex(x & -x); #endif } } using i64 = long long; using u64 = unsigned long long; #define rep(i,n) for(int i=0; i<int(n); i++) #define repr(i,n) for(int i=int(n)-1; i>=0; i--) const i64 INF = 1001001001001001001; const char* yn(bool x){ return x ? "Yes" : "No"; } template<typename A> void chmin(A& l, const A& r){ if(r < l) l = r; } template<typename A> void chmax(A& l, const A& r){ if(l < r) l = r; } template<typename A> using nega_queue = std::priority_queue<A,std::vector<A>,std::greater<A>>; using Modint = atcoder::static_modint<998244353>; namespace nachia{ template<class Modint> class Comb{ private: std::vector<Modint> F; std::vector<Modint> iF; public: void extend(int newN){ int prevN = (int)F.size() - 1; if(prevN >= newN) return; F.resize(newN+1); iF.resize(newN+1); for(int i=prevN+1; i<=newN; i++) F[i] = F[i-1] * Modint::raw(i); iF[newN] = F[newN].inv(); for(int i=newN; i>prevN; i--) iF[i-1] = iF[i] * Modint::raw(i); } Comb(int n = 1){ F.assign(2, Modint(1)); iF.assign(2, Modint(1)); extend(n); } Modint factorial(int n) const { return F[n]; } Modint invFactorial(int n) const { return iF[n]; } Modint invOf(int n) const { return iF[n] * F[n-1]; } Modint comb(int n, int r) const { if(n < 0 || n < r || r < 0) return Modint(0); return F[n] * iF[r] * iF[n-r]; } Modint invComb(int n, int r) const { if(n < 0 || n < r || r < 0) return Modint(0); return iF[n] * F[r] * F[n-r]; } Modint perm(int n, int r) const { if(n < 0 || n < r || r < 0) return Modint(0); return F[n] * iF[n-r]; } Modint invPerm(int n, int r) const { if(n < 0 || n < r || r < 0) return Modint(0); return iF[n] * F[n-r]; } Modint operator()(int n, int r) const { return comb(n,r); } }; } // namespace nachia using namespace std; void testcase(){ int H, W; cin >> H >> W; auto comb = nachia::Comb<Modint>(H+W); if(H == 1 || W == 1){ cout << "1\n"; return; } Modint ans = 0; auto f = [&](i64 k) -> Modint { if(k > i64(H) * W) return 0; return Modint(2).pow(i64(H)*W - k); }; for(int K=0; K<=W-1; K++){ auto x = comb(W-1, K); auto a = comb(H-2, K); auto b = comb(H-2, K-1); //cout << x.val() << " " << a.val() << " " << b.val() << endl; //cout << (x * a * f(H+W-1+K*2-0)).val() << endl; //cout << (x * b * f(H+W-1+K*2-1)).val() << endl; ans += x * a * f(H+W-1+K*2-0); ans += x * b * f(H+W-1+K*2-1); } cout << ans.val() << endl; } int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); testcase(); return 0; }