結果
問題 | No.1011 Infinite Stairs |
ユーザー | hiroaki0615 |
提出日時 | 2020-03-20 22:12:12 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 233 ms / 2,000 ms |
コード長 | 3,441 bytes |
コンパイル時間 | 646 ms |
コンパイル使用メモリ | 72,132 KB |
実行使用メモリ | 215,680 KB |
最終ジャッジ日時 | 2024-07-17 11:50:17 |
合計ジャッジ時間 | 2,372 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 | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 5 ms
6,944 KB |
testcase_03 | AC | 157 ms
143,232 KB |
testcase_04 | AC | 27 ms
26,752 KB |
testcase_05 | AC | 233 ms
215,680 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 3 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 3 ms
6,944 KB |
testcase_11 | AC | 31 ms
31,616 KB |
testcase_12 | AC | 3 ms
6,944 KB |
testcase_13 | AC | 20 ms
20,736 KB |
testcase_14 | AC | 2 ms
6,940 KB |
testcase_15 | AC | 25 ms
25,984 KB |
testcase_16 | AC | 106 ms
100,992 KB |
testcase_17 | AC | 11 ms
11,264 KB |
testcase_18 | AC | 63 ms
59,648 KB |
testcase_19 | AC | 3 ms
6,940 KB |
testcase_20 | AC | 2 ms
6,940 KB |
testcase_21 | AC | 27 ms
26,112 KB |
testcase_22 | AC | 52 ms
49,152 KB |
testcase_23 | AC | 32 ms
30,720 KB |
testcase_24 | AC | 35 ms
33,408 KB |
testcase_25 | AC | 56 ms
52,480 KB |
testcase_26 | AC | 12 ms
13,184 KB |
ソースコード
#include<iostream> #include<vector> #include<string> #define rep(i, start, end) for (int i = (int)start; i < (int)end; ++i) #define rrep(i, start, end) for (int i = (int)start - 1; i >= (int)end; --i) #define all(x) (x).begin(), (x).end() using namespace std; using ll = long long; template<typename T> inline bool chmax(T& a, T b) {if (a < b) {a = b; return true;} return 0;} template<typename T> inline bool chmin(T& a, T b) {if (a > b) {a = b; return true;} return 0;} template<typename T, long long MOD_VALUE> class ModInt { static constexpr long long MOD = MOD_VALUE; private: T value_; public: ModInt() {} ModInt(const T& value) {if (value >= 0) {value_ = value % MOD;} else {T k = (MOD - 1 - value) / MOD; value_ = (value + k * MOD) % MOD;}} ModInt& operator+=(const ModInt& x) {value_ += x.value_; if (value_ >= MOD) value_ -= MOD; return *this;} friend ModInt& operator+=(const T& x, const ModInt& y) {ModInt res(x); res.value_ += x.value_; if (res.value_ >= MOD) res.value_ -= MOD; return res;} ModInt& operator-=(const ModInt& x) {if (value_ < x.value_) value_ += MOD; value_ -= x.value_; return *this;} friend ModInt& operator-=(const T& x, const ModInt& y) {ModInt res(x); if (res.value_ < y.value_) res.value_ += MOD; res.value_ -= y.value_; return res;} ModInt& operator*=(const ModInt& x) {value_ = (value_ * x.value_) % MOD; return *this;} friend ModInt& operator*=(const T& x, const ModInt& y) {ModInt res(x); res.value_ = (res.value_ * y.value_) % MOD; return res;} const ModInt operator+(const ModInt& x) const {return ModInt(*this) += x;} friend const ModInt operator+(const T& x, const ModInt& y) {return ModInt(x) += y;} const ModInt operator-(const ModInt& x) const {return ModInt(*this) -= x;} friend const ModInt operator-(const T& x, const ModInt& y) {return ModInt(x) -= y;} const ModInt operator*(const ModInt& x) const {return ModInt(*this) *= x;} friend const ModInt operator*(const T& x, const ModInt& y) {return ModInt(x) *= y;} static ModInt modpow(ModInt x, long long y) {ModInt z = 1; while (y > 0) {if (y & 1) {z *= x;}x *= x; y /= 2;} return z;} ModInt& operator/=(const ModInt& x) {return *this *= modpow(x, MOD - 2);} const ModInt operator/(const ModInt& x) const {return ModInt(*this) /= x;} friend const ModInt operator/(const T& x, const ModInt& y) {return ModInt(x) /= y;} ModInt operator++(int) {ModInt tmp(*this); value_ = (value_ + 1 == MOD ? 0 : value_ + 1); return tmp;} ModInt operator--(int) {ModInt tmp(*this); value_ = (value_ - 1 < 0 ? MOD - 1 : value_ - 1); return tmp;} friend istream& operator>>(istream& stream, ModInt& x) {stream >> x.value_; x.value_ %= MOD; return stream;} friend ostream& operator<<(ostream& stream, const ModInt& x) {stream << x.value_; return stream;} }; using mint = ModInt<ll, 1000000007>; int main() { cin.tie(0); ios::sync_with_stdio(false); int N, D, K; cin >> N >> D >> K; vector<vector<mint>> dp(N + 1, vector<mint>(K + 1, 0)); dp[0][0] = 1; rep(i, 1, N + 1) { mint cumsum = 0; rep(j, 0, K + 1) { dp[i][j] = cumsum; cumsum += dp[i - 1][j]; if (j >= D) { cumsum -= dp[i - 1][j - D]; } } } cout << dp[N][K] << endl; return 0; }