結果
問題 | No.801 エレベーター |
ユーザー | minami |
提出日時 | 2019-03-18 00:49:59 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 117 ms / 2,000 ms |
コード長 | 3,275 bytes |
コンパイル時間 | 1,670 ms |
コンパイル使用メモリ | 175,140 KB |
実行使用メモリ | 38,528 KB |
最終ジャッジ日時 | 2024-07-08 07:50:13 |
合計ジャッジ時間 | 4,180 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
(要ログイン)
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 | 1 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 3 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 3 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 3 ms
5,376 KB |
testcase_09 | AC | 3 ms
5,376 KB |
testcase_10 | AC | 3 ms
5,376 KB |
testcase_11 | AC | 3 ms
5,376 KB |
testcase_12 | AC | 3 ms
5,376 KB |
testcase_13 | AC | 112 ms
38,528 KB |
testcase_14 | AC | 113 ms
38,528 KB |
testcase_15 | AC | 110 ms
38,528 KB |
testcase_16 | AC | 111 ms
38,528 KB |
testcase_17 | AC | 111 ms
38,272 KB |
testcase_18 | AC | 111 ms
38,400 KB |
testcase_19 | AC | 111 ms
38,272 KB |
testcase_20 | AC | 111 ms
38,400 KB |
testcase_21 | AC | 112 ms
38,528 KB |
testcase_22 | AC | 111 ms
38,528 KB |
testcase_23 | AC | 110 ms
38,272 KB |
testcase_24 | AC | 117 ms
38,272 KB |
testcase_25 | AC | 112 ms
38,400 KB |
testcase_26 | AC | 115 ms
38,528 KB |
testcase_27 | AC | 112 ms
38,400 KB |
testcase_28 | AC | 116 ms
38,528 KB |
ソースコード
#include "bits/stdc++.h" using namespace std; #ifdef _DEBUG #include "dump.hpp" #else #define dump(...) #endif //#define int long long #define rep(i,a,b) for(int i=(a);i<(b);i++) #define rrep(i,a,b) for(int i=(b)-1;i>=(a);i--) #define all(c) begin(c),end(c) const int INF = sizeof(int) == sizeof(long long) ? 0x3f3f3f3f3f3f3f3fLL : 0x3f3f3f3f; const int MOD = 1'000'000'007; template<class T> bool chmax(T &a, const T &b) { if (a < b) { a = b; return true; } return false; } template<class T> bool chmin(T &a, const T &b) { if (b < a) { a = b; return true; } return false; } template<int MOD> struct ModInt { static const int kMod = MOD; unsigned x; ModInt() : x(0) {} ModInt(signed sig) { int sigt = sig % kMod; if (sigt < 0) sigt += kMod; x = sigt; } ModInt(signed long long sig) { int sigt = sig % kMod; if (sigt < 0) sigt += kMod; x = sigt; } int get() const { return (int)x; } ModInt &operator+=(ModInt that) { if ((x += that.x) >= kMod) x -= kMod; return *this; } ModInt &operator-=(ModInt that) { if ((x += kMod - that.x) >= kMod) x -= kMod; return *this; } ModInt &operator*=(ModInt that) { x = (unsigned long long)x * that.x % kMod; 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 { signed a = x, b = kMod, u = 1, v = 0; while (b) { signed t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } if (u < 0) u += kMod; ModInt res; res.x = (unsigned)u; return res; } }; template<int MOD> ostream &operator << (ostream &os, const ModInt<MOD> &m) { return os << m.x; } template<int MOD> istream &operator >> (istream &is, ModInt<MOD> &m) { signed long long s; is >> s; m = ModInt<MOD>(s); return is; }; using mint = ModInt<1000000007>; mint pow(mint a, unsigned long long k) { mint r = 1; while (k) { if (k & 1) r *= a; a *= a; k >>= 1; } return r; } vector<mint> fact, factinv; void precomputeFactorial(int N) { N = min(N, mint::kMod - 1); fact.resize(N + 1); factinv.resize(N + 1); fact[0] = 1; rep(i, 1, N + 1) fact[i] = fact[i - 1] * i; factinv[N] = fact[N].inverse(); for (int i = N; i >= 1; i--) factinv[i - 1] = factinv[i] * i; } mint combi(int n, int r) { if (n >= mint::kMod) return combi(n % mint::kMod, r % mint::kMod) * combi(n / mint::kMod, r / mint::kMod); return r > n ? 0 : fact[n] * factinv[n - r] * factinv[r]; } signed main() { cin.tie(0); ios::sync_with_stdio(false); int N, M, K; cin >> N >> M >> K; vector<int> L(M), R(M); rep(i, 0, M) { cin >> L[i] >> R[i]; L[i], R[i]; L[i]--; } vector<vector<mint>> dp(K + 1, vector<mint>(N)); dp[0][0] = 1; rep(k, 0, K) { vector<mint> sum(N + 1); rep(i, 0, N) { sum[i + 1] += sum[i] + dp[k][i]; } vector<mint> imos(N + 1); rep(i, 0, M) { mint add = sum[R[i]] - sum[L[i]]; imos[L[i]] += add; imos[R[i]] -= add; } rep(i, 0, N) { imos[i + 1] += imos[i]; } rep(i, 0, N) { dp[k + 1][i] = imos[i]; } } cout << dp[K][N - 1] << endl; return 0; }