結果
問題 | No.916 Encounter On A Tree |
ユーザー | 👑 emthrm |
提出日時 | 2019-10-25 22:37:42 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 57 ms / 2,000 ms |
コード長 | 5,058 bytes |
コンパイル時間 | 1,354 ms |
コンパイル使用メモリ | 128,768 KB |
実行使用メモリ | 15,624 KB |
最終ジャッジ日時 | 2024-09-13 04:54:44 |
合計ジャッジ時間 | 4,505 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 57 ms
15,480 KB |
testcase_03 | AC | 57 ms
15,500 KB |
testcase_04 | AC | 56 ms
15,488 KB |
testcase_05 | AC | 57 ms
15,360 KB |
testcase_06 | AC | 57 ms
15,528 KB |
testcase_07 | AC | 57 ms
15,356 KB |
testcase_08 | AC | 9 ms
6,944 KB |
testcase_09 | AC | 17 ms
6,940 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 57 ms
15,452 KB |
testcase_13 | AC | 57 ms
15,588 KB |
testcase_14 | AC | 57 ms
15,508 KB |
testcase_15 | AC | 57 ms
15,352 KB |
testcase_16 | AC | 16 ms
6,940 KB |
testcase_17 | AC | 57 ms
15,624 KB |
testcase_18 | AC | 2 ms
6,944 KB |
testcase_19 | AC | 57 ms
15,568 KB |
testcase_20 | AC | 56 ms
15,492 KB |
testcase_21 | AC | 57 ms
15,420 KB |
testcase_22 | AC | 57 ms
15,532 KB |
testcase_23 | AC | 57 ms
15,576 KB |
testcase_24 | AC | 56 ms
15,492 KB |
testcase_25 | AC | 57 ms
15,528 KB |
testcase_26 | AC | 31 ms
9,344 KB |
testcase_27 | AC | 31 ms
9,344 KB |
testcase_28 | AC | 16 ms
6,944 KB |
testcase_29 | AC | 57 ms
15,472 KB |
testcase_30 | AC | 57 ms
15,532 KB |
testcase_31 | AC | 57 ms
15,572 KB |
testcase_32 | AC | 57 ms
15,528 KB |
testcase_33 | AC | 32 ms
9,344 KB |
testcase_34 | AC | 16 ms
6,940 KB |
testcase_35 | AC | 9 ms
6,940 KB |
testcase_36 | AC | 57 ms
15,524 KB |
testcase_37 | AC | 55 ms
15,472 KB |
testcase_38 | AC | 16 ms
6,944 KB |
testcase_39 | AC | 57 ms
15,500 KB |
testcase_40 | AC | 57 ms
15,528 KB |
testcase_41 | AC | 2 ms
6,940 KB |
testcase_42 | AC | 2 ms
6,944 KB |
testcase_43 | AC | 2 ms
6,940 KB |
testcase_44 | AC | 2 ms
6,940 KB |
testcase_45 | AC | 9 ms
6,944 KB |
testcase_46 | AC | 2 ms
6,940 KB |
testcase_47 | AC | 2 ms
6,940 KB |
testcase_48 | AC | 2 ms
6,940 KB |
testcase_49 | AC | 2 ms
6,944 KB |
testcase_50 | AC | 2 ms
6,940 KB |
testcase_51 | AC | 2 ms
6,944 KB |
testcase_52 | AC | 2 ms
6,944 KB |
testcase_53 | AC | 2 ms
6,940 KB |
testcase_54 | AC | 1 ms
6,940 KB |
testcase_55 | AC | 2 ms
6,944 KB |
testcase_56 | AC | 2 ms
6,940 KB |
testcase_57 | AC | 2 ms
6,940 KB |
testcase_58 | AC | 2 ms
6,944 KB |
testcase_59 | AC | 3 ms
6,940 KB |
testcase_60 | AC | 4 ms
6,940 KB |
ソースコード
#include <algorithm> #include <bitset> #include <cassert> #include <cctype> #include <chrono> #define _USE_MATH_DEFINES #include <cmath> #include <cstring> #include <ctime> #include <deque> #include <functional> #include <iostream> #include <iomanip> #include <iterator> #include <map> #include <numeric> #include <queue> #include <set> #include <sstream> #include <stack> #include <string> #include <tuple> #include <utility> #include <vector> using namespace std; #define FOR(i,m,n) for(int i=(m);i<(n);++i) #define REP(i,n) FOR(i,0,n) #define ALL(v) (v).begin(),(v).end() const int INF = 0x3f3f3f3f; const long long LINF = 0x3f3f3f3f3f3f3f3fLL; const double EPS = 1e-8; const int MOD = 1000000007; // 998244353; const int dy[] = {1, 0, -1, 0}, dx[] = {0, -1, 0, 1}; struct IOSetup { IOSetup() { cin.tie(nullptr); ios_base::sync_with_stdio(false); cout << fixed << setprecision(20); cerr << fixed << setprecision(10); } } iosetup; /*-------------------------------------------------*/ int mod = MOD; struct ModInt { unsigned val; ModInt(): val(0) {} ModInt(long long x) : val(x >= 0 ? x % mod : x % mod + mod) {} ModInt pow(long long exponent) { ModInt tmp = *this, res = 1; while (exponent > 0) { if (exponent & 1) res *= tmp; tmp *= tmp; exponent >>= 1; } return res; } ModInt &operator+=(const ModInt &rhs) { if((val += rhs.val) >= mod) val -= mod; return *this; } ModInt &operator-=(const ModInt &rhs) { if((val += mod - rhs.val) >= mod) val -= mod; return *this; } ModInt &operator*=(const ModInt &rhs) { val = static_cast<unsigned long long>(val) * rhs.val % mod; return *this; } ModInt &operator/=(const ModInt &rhs) { return *this *= rhs.inv(); } bool operator==(const ModInt &rhs) const { return val == rhs.val; } bool operator!=(const ModInt &rhs) const { return val != rhs.val; } bool operator<(const ModInt &rhs) const { return val < rhs.val; } bool operator<=(const ModInt &rhs) const { return val <= rhs.val; } bool operator>(const ModInt &rhs) const { return val > rhs.val; } bool operator>=(const ModInt &rhs) const { return val >= rhs.val; } ModInt operator-() const { return ModInt(val ? mod - val : 0); } ModInt operator+(const ModInt &rhs) const { return ModInt(*this) += rhs; } ModInt operator-(const ModInt &rhs) const { return ModInt(*this) -= rhs; } ModInt operator*(const ModInt &rhs) const { return ModInt(*this) *= rhs; } ModInt operator/(const ModInt &rhs) const { return ModInt(*this) /= rhs; } friend ostream &operator<<(ostream &os, const ModInt &rhs) { return os << rhs.val; } friend istream &operator>>(istream &is, ModInt &rhs) { long long x; is >> x; rhs = ModInt(x); return is; } private: ModInt inv() const { // if (__gcd(val, mod) != 1) assert(false); unsigned a = val, b = mod; int x = 1, y = 0; while (b) { unsigned tmp = a / b; swap(a -= tmp * b, b); swap(x -= tmp * y, y); } return ModInt(x); } }; int abs(const ModInt &x) { return x.val; } struct Combinatorics { int val; vector<ModInt> fact, fact_inv, inv; Combinatorics(int val = 10000000) : val(val), fact(val + 1), fact_inv(val + 1), inv(val + 1) { fact[0] = 1; FOR(i, 1, val + 1) fact[i] = fact[i - 1] * i; fact_inv[val] = ModInt(1) / fact[val]; for (int i = val; i > 0; --i) fact_inv[i - 1] = fact_inv[i] * i; FOR(i, 1, val + 1) inv[i] = fact[i - 1] * fact_inv[i]; } ModInt nCk(int n, int k) { if (n < 0 || n < k || k < 0) return ModInt(0); // assert(n <= val && k <= val); return fact[n] * fact_inv[k] * fact_inv[n - k]; } ModInt nPk(int n, int k) { if (n < 0 || n < k || k < 0) return ModInt(0); // assert(n <= val); return fact[n] * fact_inv[n - k]; } ModInt nHk(int n, int k) { if (n < 0 || k < 0) return ModInt(0); return (k == 0 ? ModInt(1) : nCk(n + k - 1, k)); } }; int main() { vector<int> left{-1, 1}, right{-1, 1}; FOR(i, 2, 21) { left.emplace_back(left.back() * 2); right.emplace_back(left.back() * 2 - 1); } int d, l, r, k; cin >> d >> l >> r >> k; int dep_l, dep_r; for (dep_l = 1; dep_l <= d; ++dep_l) { if (left[dep_l] <= l && l <= right[dep_l]) break; } for (dep_r = 1; dep_r <= d; ++dep_r) { if (left[dep_r] <= r && r <= right[dep_r]) break; } // cout << dep_l << ' ' << dep_r << '\n'; Combinatorics com(1 << d); ModInt ans = 0; for (int middle = dep_l; middle >= 1; --middle) { if (dep_r - dep_l + 2 * (dep_l - middle) != k) continue; ans = ModInt(1 << (dep_r - dep_l)) * ModInt(1 << max(dep_l - middle - 1, 0)); if (dep_l == dep_r) { ans *= 1 << (dep_l - 1); ans *= com.fact[(1 << (dep_r - 1)) - 2]; } else { ans *= com.fact[(1 << (dep_r - 1)) - 1]; } break; } for (int i = 1; i <= d; ++i) if (i != dep_r) { ans *= com.fact[1 << (i - 1)]; } cout << ans << '\n'; return 0; }