結果
問題 | No.1001 注文の多い順列 |
ユーザー | otera |
提出日時 | 2020-06-25 00:11:51 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 74 ms / 2,000 ms |
コード長 | 5,684 bytes |
コンパイル時間 | 1,004 ms |
コンパイル使用メモリ | 119,116 KB |
実行使用メモリ | 75,328 KB |
最終ジャッジ日時 | 2024-07-03 20:29:39 |
合計ジャッジ時間 | 4,065 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 35 ms
75,136 KB |
testcase_01 | AC | 36 ms
75,096 KB |
testcase_02 | AC | 36 ms
75,080 KB |
testcase_03 | AC | 34 ms
75,072 KB |
testcase_04 | AC | 35 ms
75,056 KB |
testcase_05 | AC | 35 ms
75,144 KB |
testcase_06 | AC | 36 ms
75,168 KB |
testcase_07 | AC | 35 ms
75,120 KB |
testcase_08 | AC | 36 ms
75,096 KB |
testcase_09 | AC | 35 ms
75,092 KB |
testcase_10 | AC | 36 ms
75,200 KB |
testcase_11 | AC | 36 ms
75,072 KB |
testcase_12 | AC | 36 ms
75,056 KB |
testcase_13 | AC | 37 ms
75,120 KB |
testcase_14 | AC | 37 ms
75,104 KB |
testcase_15 | AC | 36 ms
75,120 KB |
testcase_16 | AC | 36 ms
75,152 KB |
testcase_17 | AC | 36 ms
75,092 KB |
testcase_18 | AC | 67 ms
75,192 KB |
testcase_19 | AC | 64 ms
75,172 KB |
testcase_20 | AC | 54 ms
75,136 KB |
testcase_21 | AC | 52 ms
75,064 KB |
testcase_22 | AC | 73 ms
75,144 KB |
testcase_23 | AC | 74 ms
75,172 KB |
testcase_24 | AC | 71 ms
75,028 KB |
testcase_25 | AC | 74 ms
75,192 KB |
testcase_26 | AC | 55 ms
75,196 KB |
testcase_27 | AC | 57 ms
75,124 KB |
testcase_28 | AC | 59 ms
75,140 KB |
testcase_29 | AC | 63 ms
75,108 KB |
testcase_30 | AC | 64 ms
75,328 KB |
testcase_31 | AC | 66 ms
75,152 KB |
testcase_32 | AC | 49 ms
75,204 KB |
testcase_33 | AC | 50 ms
75,220 KB |
ソースコード
/** * author: otera **/ #include<iostream> #include<string> #include<cstdio> #include<cstring> #include<vector> #include<cmath> #include<algorithm> #include<functional> #include<iomanip> #include<queue> #include<deque> #include<ciso646> #include<random> #include<map> #include<set> #include<complex> #include<bitset> #include<stack> #include<unordered_map> #include<utility> #include<cassert> using namespace std; //#define int long long typedef long long ll; typedef unsigned long long ul; typedef unsigned int ui; typedef long double ld; const int inf=1e9+7; const ll INF=1LL<<60 ; const ll mod=1e9+7 ; #define rep(i,n) for(int i=0;i<n;i++) #define per(i,n) for(int i=n-1;i>=0;i--) #define Rep(i,sta,n) for(int i=sta;i<n;i++) #define rep1(i,n) for(int i=1;i<=n;i++) #define per1(i,n) for(int i=n;i>=1;i--) #define Rep1(i,sta,n) for(int i=sta;i<=n;i++) typedef complex<ld> Point; const ld eps = 1e-8; const ld pi = acos(-1.0); typedef pair<int, int> P; typedef pair<ld, ld> LDP; typedef pair<ll, ll> LP; #define fr first #define sc second #define all(c) c.begin(),c.end() #define pb push_back #define debug(x) cerr << #x << " = " << (x) << endl; template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } // modint: mod 計算を int を扱うように扱える構造体 template<int MOD> struct Fp { long long val; constexpr Fp(long long v = 0) noexcept : val(v % MOD) { if (val < 0) val += MOD; } constexpr int getmod() { return MOD; } constexpr Fp operator - () const noexcept { return val ? MOD - val : 0; } constexpr Fp operator + (const Fp& r) const noexcept { return Fp(*this) += r; } constexpr Fp operator - (const Fp& r) const noexcept { return Fp(*this) -= r; } constexpr Fp operator * (const Fp& r) const noexcept { return Fp(*this) *= r; } constexpr Fp operator / (const Fp& r) const noexcept { return Fp(*this) /= r; } constexpr Fp& operator += (const Fp& r) noexcept { val += r.val; if (val >= MOD) val -= MOD; return *this; } constexpr Fp& operator -= (const Fp& r) noexcept { val -= r.val; if (val < 0) val += MOD; return *this; } constexpr Fp& operator *= (const Fp& r) noexcept { val = val * r.val % MOD; return *this; } constexpr Fp& operator /= (const Fp& r) noexcept { long long a = r.val, b = MOD, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } val = val * u % MOD; if (val < 0) val += MOD; return *this; } constexpr bool operator == (const Fp& r) const noexcept { return this->val == r.val; } constexpr bool operator != (const Fp& r) const noexcept { return this->val != r.val; } friend constexpr ostream& operator << (ostream &os, const Fp<MOD>& x) noexcept { return os << x.val; } friend constexpr istream& operator >> (istream &is, Fp<MOD>& x) noexcept { return is >> x.val; } friend constexpr Fp<MOD> modpow(const Fp<MOD> &a, long long n) noexcept { if (n == 0) return 1; auto t = modpow(a, n / 2); t = t * t; if (n & 1) t = t * a; return t; } }; // 二項係数ライブラリ template<class T> struct BiCoef { vector<T> fact_, inv_, finv_; constexpr BiCoef() {} constexpr BiCoef(int n) noexcept : fact_(n, 1), inv_(n, 1), finv_(n, 1) { init(n); } constexpr void init(int n) noexcept { fact_.assign(n, 1), inv_.assign(n, 1), finv_.assign(n, 1); int MOD = fact_[0].getmod(); for(int i = 2; i < n; i++){ fact_[i] = fact_[i-1] * i; inv_[i] = -inv_[MOD%i] * (MOD/i); finv_[i] = finv_[i-1] * inv_[i]; } } constexpr T com(int n, int k) const noexcept { if (n < k || n < 0 || k < 0) return 0; return fact_[n] * finv_[k] * finv_[n-k]; } constexpr T fact(int n) const noexcept { if (n < 0) return 0; return fact_[n]; } constexpr T inv(int n) const noexcept { if (n < 0) return 0; return inv_[n]; } constexpr T finv(int n) const noexcept { if (n < 0) return 0; return finv_[n]; } }; const int MOD = 1000000007; //const int MOD = 998244353; using mint = Fp<MOD>; BiCoef<mint> bc; void solve() { int n; cin >> n; vector<int> t(n), x(n); vector<vector<int>> y(2, vector<int>()); rep(i, n) { cin >> t[i] >> x[i]; y[t[i]].push_back(x[i] - 1); } int sz0 = (int)y[0].size(), sz1 = (int)y[1].size(); static int cnt0[3030], cnt1[3030]; rep(i, 3030) { cnt0[i] = cnt1[i] = 0; } rep(i, n) { for(int a: y[0]) { if(i <= a) ++ cnt0[i]; } } rep(i, n) { for(int a: y[1]) { if(i >= a) ++ cnt1[i]; } } static mint dp[3030][3030]; rep(i, 3030) { rep(j, 3030) { dp[i][j] = 0; } } dp[0][0] = 1; for(int i = 0; i <= sz0; ++ i) { for(int j = 0; j <= sz1; ++ j) { int nxt = i + j; if(i < sz0) dp[i + 1][j] += dp[i][j] * (mint)(cnt0[nxt] - (sz0 - (i + 1))); if(j < sz1) dp[i][j + 1] += dp[i][j] * (mint)(cnt1[nxt] - j); } } cout << dp[sz0][sz1] << endl; } signed main() { ios::sync_with_stdio(false); cin.tie(0); //cout << fixed << setprecision(10); //int t; cin >> t; rep(i, t)solve(); solve(); return 0; }