結果
問題 | No.1011 Infinite Stairs |
ユーザー | はまやんはまやん |
提出日時 | 2020-03-21 10:23:05 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 157 ms / 2,000 ms |
コード長 | 3,539 bytes |
コンパイル時間 | 2,304 ms |
コンパイル使用メモリ | 202,472 KB |
実行使用メモリ | 242,632 KB |
最終ジャッジ日時 | 2024-07-17 11:59:23 |
合計ジャッジ時間 | 5,352 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 | 64 ms
242,500 KB |
testcase_01 | AC | 64 ms
242,500 KB |
testcase_02 | AC | 66 ms
242,500 KB |
testcase_03 | AC | 125 ms
242,508 KB |
testcase_04 | AC | 74 ms
242,508 KB |
testcase_05 | AC | 157 ms
242,624 KB |
testcase_06 | AC | 65 ms
242,628 KB |
testcase_07 | AC | 66 ms
242,628 KB |
testcase_08 | AC | 64 ms
242,500 KB |
testcase_09 | AC | 65 ms
242,500 KB |
testcase_10 | AC | 65 ms
242,504 KB |
testcase_11 | AC | 79 ms
242,628 KB |
testcase_12 | AC | 66 ms
242,628 KB |
testcase_13 | AC | 71 ms
242,632 KB |
testcase_14 | AC | 63 ms
242,504 KB |
testcase_15 | AC | 77 ms
242,504 KB |
testcase_16 | AC | 106 ms
242,504 KB |
testcase_17 | AC | 66 ms
242,500 KB |
testcase_18 | AC | 88 ms
242,504 KB |
testcase_19 | AC | 64 ms
242,500 KB |
testcase_20 | AC | 62 ms
242,500 KB |
testcase_21 | AC | 75 ms
242,500 KB |
testcase_22 | AC | 85 ms
242,500 KB |
testcase_23 | AC | 77 ms
242,500 KB |
testcase_24 | AC | 78 ms
242,624 KB |
testcase_25 | AC | 84 ms
242,504 KB |
testcase_26 | AC | 69 ms
242,628 KB |
ソースコード
#include<bits/stdc++.h> #define rep(i,a,b) for(int i=a;i<b;i++) #define rrep(i,a,b) for(int i=a;i>=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() //#pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; template<class T>bool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; } template<class T>bool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; } //--------------------------------------------------------------------------------------------------- template<int MOD> struct ModInt { static const int Mod = MOD; unsigned x; ModInt() : x(0) { } ModInt(signed sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; } ModInt(signed long long sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; } int get() const { return (int)x; } ModInt& operator+=(ModInt that) { if ((x += that.x) >= MOD) x -= MOD; return *this; } ModInt& operator-=(ModInt that) { if ((x += MOD - that.x) >= MOD) x -= MOD; return *this; } ModInt& operator*=(ModInt that) { x = (unsigned long long)x * that.x % MOD; return *this; } ModInt& operator/=(ModInt that) { return *this *= that.inverse(); } ModInt operator+(ModInt that) const { return ModInt(*this) += that; } ModInt operator-(ModInt that) const { return ModInt(*this) -= that; } ModInt operator*(ModInt that) const { return ModInt(*this) *= that; } ModInt operator/(ModInt that) const { return ModInt(*this) /= that; } ModInt inverse() const { long long a = x, b = MOD, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); } return ModInt(u); } bool operator==(ModInt that) const { return x == that.x; } bool operator!=(ModInt that) const { return x != that.x; } ModInt operator-() const { ModInt t; t.x = x == 0 ? 0 : Mod - x; return t; } }; template<int MOD> ostream& operator<<(ostream& st, const ModInt<MOD> a) { st << a.get(); return st; }; template<int MOD> ModInt<MOD> operator^(ModInt<MOD> a, unsigned long long k) { ModInt<MOD> r = 1; while (k) { if (k & 1) r *= a; a *= a; k >>= 1; } return r; } typedef ModInt<1000000007> mint; /*--------------------------------------------------------------------------------------------------- ∧_∧ ∧_∧ (´<_` ) Welcome to My Coding Space! ( ´_ゝ`) / ⌒i @hamayanhamayan0 / \ | | / / ̄ ̄ ̄ ̄/ | __(__ニつ/ _/ .| .|____ \/____/ (u ⊃ ---------------------------------------------------------------------------------------------------*/ int N, d, K; mint dp[303][101010]; mint tot[303][101010]; //--------------------------------------------------------------------------------------------------- void _main() { cin >> N >> d >> K; dp[0][0] = 1; rep(turn, 0, N) { tot[turn][0] = dp[turn][0]; rep(i, 1, K + 1) tot[turn][i] = dp[turn][i] + tot[turn][i - 1]; rep(i, 1, K + 1) { dp[turn + 1][i] = tot[turn][i - 1]; if (0 <= i - d - 1) dp[turn + 1][i] -= tot[turn][i - d - 1]; } } cout << dp[N][K] << endl; }