結果
問題 | No.1289 RNG and OR |
ユーザー | fastmath |
提出日時 | 2020-11-13 22:34:35 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 113 ms / 2,000 ms |
コード長 | 3,388 bytes |
コンパイル時間 | 2,017 ms |
コンパイル使用メモリ | 204,432 KB |
実行使用メモリ | 9,344 KB |
最終ジャッジ日時 | 2024-07-22 21:33:24 |
合計ジャッジ時間 | 3,046 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | 4 ms
7,424 KB |
testcase_01 | AC | 4 ms
7,552 KB |
testcase_02 | AC | 4 ms
7,424 KB |
testcase_03 | AC | 4 ms
7,424 KB |
testcase_04 | AC | 4 ms
7,492 KB |
testcase_05 | AC | 5 ms
7,552 KB |
testcase_06 | AC | 4 ms
7,492 KB |
testcase_07 | AC | 4 ms
7,424 KB |
testcase_08 | AC | 4 ms
7,424 KB |
testcase_09 | AC | 4 ms
7,424 KB |
testcase_10 | AC | 4 ms
7,424 KB |
testcase_11 | AC | 5 ms
7,552 KB |
testcase_12 | AC | 4 ms
7,296 KB |
testcase_13 | AC | 5 ms
7,424 KB |
testcase_14 | AC | 6 ms
7,424 KB |
testcase_15 | AC | 7 ms
7,492 KB |
testcase_16 | AC | 11 ms
7,552 KB |
testcase_17 | AC | 17 ms
7,424 KB |
testcase_18 | AC | 31 ms
7,808 KB |
testcase_19 | AC | 57 ms
8,320 KB |
testcase_20 | AC | 113 ms
9,344 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; #define int long long #define ii pair <int, int> #define app push_back #define all(a) a.begin(), a.end() #define bp __builtin_popcountll #define ll long long #define mp make_pair #define f first #define s second #define Time (double)clock()/CLOCKS_PER_SEC #define debug(x) std::cout << #x << ": " << x << '\n'; const int MOD = 998'244'353; //need define int long long int mod(int n) { n %= MOD; if (n < 0) return n + MOD; else return n; } int fp(int a, int p) { int ans = 1, c = a; for (int i = 0; (1ll << i) <= p; ++i) { if ((p >> i) & 1) ans = mod(ans * c); c = mod(c * c); } return ans; } int dv(int a, int b) { return mod(a * fp(b, MOD - 2)); } struct M { ll x; M (int x_) { x = mod(x_); } M () { x = 0; } M operator + (M y) { int ans = x + y.x; if (ans >= MOD) ans -= MOD; return M(ans); } M operator - (M y) { int ans = x - y.x; if (ans < 0) ans += MOD; return M(ans); } M operator * (M y) { return M(x * y.x % MOD); } M operator / (M y) { return M(x * fp(y.x, MOD - 2) % MOD); } M operator + (int y) { return (*this) + M(y); } M operator - (int y) { return (*this) - M(y); } M operator * (int y) { return (*this) * M(y); } M operator / (int y) { return (*this) / M(y); } M operator ^ (int p) { return M(fp(x, p)); } void operator += (M y) { *this = *this + y; } void operator -= (M y) { *this = *this - y; } void operator *= (M y) { *this = *this * y; } void operator /= (M y) { *this = *this / y; } void operator += (int y) { *this = *this + y; } void operator -= (int y) { *this = *this - y; } void operator *= (int y) { *this = *this * y; } void operator /= (int y) { *this = *this / y; } void operator ^= (int p) { *this = *this ^ p; } }; const int N = 18; M p[1 << N]; M sub[1 << N]; signed main() { #ifdef HOME freopen("input.txt", "r", stdin); #else #define endl '\n' ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); cout.setf(ios::fixed); cout.precision(20); #endif int n; cin >> n; vector <int> a(1 << n); int s = 0; for (int i = 0; i < (1 << n); ++i) { cin >> a[i]; s += a[i]; } for (int i = 0; i < (1 << n); ++i) { p[i] = M(a[i])/s; sub[i] = p[i]; } for (int b = 0; b < n; ++b) for (int i = 0; i < (1 << n); ++i) if ((i>>b) & 1) sub[i] += sub[i - (1<<b)]; auto f = [&] (int mask) { int oth = (1 << n) - 1 - mask; return sub[oth]; }; auto sum = [&] (M a) { assert(a.x != 1); return a / (M(1) - a); }; /* for (int i = 1; i <= 100; ++i) { for (int j = 1; j <= 100; ++j) { M t = M(i)/M(j); if (t.x == 333333338) { cout << i << ' ' << j << endl; exit(0); } } } */ M ans(0); for (int mask = 1; mask < (1 << n); ++mask) { //cout << mask << ' ' << f(mask).x << ' ' << sum(f(mask)).x << endl; if (bp(mask)&1) { ans += sum(f(mask)); } else { ans -= sum(f(mask)); } } cout << (ans+1).x << endl; }