結果
| 問題 | No.260 世界のなんとか3 |
| コンテスト | |
| ユーザー |
はまやんはまやん
|
| 提出日時 | 2017-06-18 17:22:30 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 131 ms / 2,000 ms |
| コード長 | 4,424 bytes |
| 記録 | |
| コンパイル時間 | 2,036 ms |
| コンパイル使用メモリ | 175,340 KB |
| 実行使用メモリ | 8,768 KB |
| 最終ジャッジ日時 | 2024-10-01 20:20:26 |
| 合計ジャッジ時間 | 6,036 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 27 |
ソースコード
#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
//---------------------------------------------------------------------------------------------------
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> 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; }
template<typename T, int FAC_MAX> struct Comb { vector<T> fac, ifac;
Comb() {fac.resize(FAC_MAX, 1); ifac.resize(FAC_MAX, 1);rep(i, 1, FAC_MAX) fac[i] = fac[i - 1] * i;
rep(i, 1, FAC_MAX) ifac[i] = T(1) / fac[i];}
T aPb(int a, int b) { if (b < 0 || a < b) return 0; return fac[a] * ifac[a - b]; }
T aCb(int a, int b) { if (b < 0 || a < b) return 0; return fac[a] * ifac[a - b] * ifac[b]; }
T nHk(int n, int k) { if (n == 0 && k == 0) return 1; if (n <= 0 || k < 0) return 0;
return aCb(n + k - 1, k); }
};
typedef ModInt<1000000007> mint;
/*---------------------------------------------------------------------------------------------------
∧_∧
∧_∧ (´<_` ) Welcome to My Coding Space!
( ´_ゝ`) / ⌒i
/ \ | |
/ / ̄ ̄ ̄ ̄/ |
__(__ニつ/ _/ .| .|____
\/____/ (u ⊃
---------------------------------------------------------------------------------------------------*/
Comb<mint, 201010> com;
//-----------------------------------------------------------------------------------
mint dp[10101][24][2][2];
mint count(string S) {
int n = S.length();
rep(i, 0, n + 1) rep(j, 0, 24) rep(k, 0, 2) rep(l, 0, 2) dp[i][j][k][l] = 0;
dp[0][0][0][1] = 1;
rep(i, 0, n) rep(j, 0, 24) rep(k, 0, 2) rep(l, 0, 2) {
int cc = S[i] - '0';
int ma = 10;
if (l == 1) ma = cc + 1;
rep(c, 0, ma) {
int ii = i + 1;
int jj = (j * 10 + c) % 24;
int kk = k | (c == 3);
int ll;
if (l == 1 && c == cc) ll = 1;
else ll = 0;
dp[ii][jj][kk][ll] = dp[ii][jj][kk][ll] + dp[i][j][k][l];
}
}
mint res = 0;
rep(j, 0, 24) rep(l, 0, 2) if (j % 8 != 0) {
res = res + dp[n][j][1][l];
}
rep(j, 0, 24) rep(l, 0, 2) if (j % 3 == 0 && j % 8 != 0) {
res = res + dp[n][j][0][l];
}
return res;
}
//-----------------------------------------------------------------------------------
bool chk(string S) {
int mo = 0;
for (char c : S) mo = (mo * 10 + c - '0') % 24;
bool aho = (mo % 3 == 0);
for (char c : S) if (c == '3') aho = true;
bool seishun = (mo % 8 == 0);
return aho && !seishun;
}
//-----------------------------------------------------------------------------------
void _main() {
string A, B; cin >> A >> B;
mint ans = count(B) - count(A);
if (chk(A)) ans = ans + 1;
cout << ans.get() << endl;
}
はまやんはまやん