結果

問題 No.1269 I hate Fibonacci Number
コンテスト
ユーザー SHIJOU
提出日時 2020-10-24 16:39:16
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 18 ms / 3,000 ms
コード長 5,686 bytes
コンパイル時間 2,654 ms
コンパイル使用メモリ 218,424 KB
最終ジャッジ日時 2025-01-15 15:06:48
ジャッジサーバーID
（参考情報） 		judge4 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 36
権限があれば一括ダウンロードができます

ソースコード

diff # 

//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
#define rep(i, n) for(int i=0; i<n; ++i)
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
using namespace std;
using ll = int64_t;
using ld = long double;
using P = pair<int, int>;
using vs = vector<string>;
using vi = vector<int>;
using vvi = vector<vi>;
template<class T> using PQ = priority_queue<T>;
template<class T> using PQG = priority_queue<T, vector<T>, greater<T> >;
const int INF = 0xccccccc;
const ll LINF = 0xcccccccccccccccLL;
template<typename T1, typename T2>
inline bool chmax(T1 &a, T2 b) {return a < b && (a = b, true);}
template<typename T1, typename T2>
inline bool chmin(T1 &a, T2 b) {return a > b && (a = b, true);}
template<typename T1, typename T2>
istream &operator>>(istream &is, pair<T1, T2> &p) { return is >> p.first >> p.second;}
template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> &p) { return os << p.first << ' ' << p.second;}

const unsigned int mod = 1000000007;
//const unsigned int mod = 998244353;

struct mint {
	unsigned int x;
	mint():x(0) {}
	mint(int64_t x_) {
		int64_t v = int64_t(x_ % mod);
		if(v < 0) v += mod;
		x = (unsigned int)v;
	}
	static mint row(int v) {
		mint v_;
		v_.x = v;
		return v_;
	}
	mint operator-() const { return mint(-int64_t(x));}
	mint& operator+=(const mint a) {
		if ((x += a.x) >= mod) x -= mod;
		return *this;
	}
	mint& operator-=(const mint a) {
		if ((x += mod-a.x) >= mod) x -= mod;
		return *this;
	}
	mint& operator*=(const mint a) {
		uint64_t z = x;
		z *= a.x;
		x = (unsigned int)(z % mod);
		return *this;
	}
	mint operator+(const mint a) const { return mint(*this) += a;}
	mint operator-(const mint a) const { return mint(*this) -= a;}
	mint operator*(const mint a) const { return mint(*this) *= a;}
	friend bool operator==(const mint &a, const mint &b) {return a.x == b.x;}
	friend bool operator!=(const mint &a, const mint &b) {return a.x != b.x;}
	mint &operator++() {
		x++;
		if(x == mod) x = 0;
		return *this;
	}
	mint &operator--() {
		if(x == 0) x = mod;
		x--;
		return *this;
	}
	mint operator++(int) {
		mint result = *this;
		++*this;
		return result;
	}
	mint operator--(int) {
		mint result = *this;
		--*this;
		return result;
	}
	mint pow(int64_t t) const {
		mint x_ = *this, r = 1;
		while(t) {
			if(t&1) r *= x_;
			x_ *= x_;
			t >>= 1;
		}
		return r;
	}
	//for prime mod
	mint inv() const { return pow(mod-2);}
	mint& operator/=(const mint a) { return *this *= a.inv();}
	mint operator/(const mint a) {return mint(*this) /= a;}
};

istream& operator>>(istream& is, mint& a) { return is >> a.x;}
ostream& operator<<(ostream& os, const mint& a) { return os << a.x;}

string to_string(mint a) {
	return to_string(a.x);
}

#undef _GLIBCXX_DEBUG
string to_string(const string &s) {return '"' + s + '"';}
string to_string(const char *s) {return to_string(string(s));}
string to_string(bool b) {return b?"true":"false";}
string to_string(vector<bool> v) {
	string res = "{";
	for(int i = 0; i < int(v.size()); i++) {
		if(i) res += ", ";
		res += to_string(v[i]);
	}
	res += "}";
	return res;
}
template<size_t N>
string to_string(bitset<N> v) {
	string res;
	for(size_t i = 0; i < N; i++) res += char('0' + v[i]);
	return res;
}
template<class A, class B>
string to_string(pair<A, B>);
template<class A, class B, class C>
string to_string(tuple<A, B, C>);
template<class A, class B, class C, class D>
string to_string(tuple<A, B, C, D>);
template<class A>
string to_string(A v) {
	bool first = true;
	string res = "{";
	for(const auto &x:v) {
		if(!first) res += ", ";
		first = false;
		res += to_string(x);
	}
	res += "}";
	return res;
}
template<class A, class B>
string to_string(pair<A, B> p) {
	return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
template<class A, class B, class C>
string to_string(tuple<A, B, C> t) {
	return "(" + to_string(get<0>(t)) + ", " + to_string(get<1>(t)) + ", " + to_string(get<2>(t)) + ")";
}
template<class A, class B, class C, class D>
string to_string(tuple<A, B, C, D> t) {
	return "(" + to_string(get<0>(t)) + ", " + to_string(get<1>(t)) + ", " + to_string(get<2>(t)) + ", " + to_string(get<3>(t)) + ")";
}
void debug_out() {cerr << endl;}
template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
	cerr << ' ' << to_string(H);
	debug_out(T...);
}
#ifdef LOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 822
#endif

//head



int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	ll l, r;
	cin >> n >> l >> r;
	vector<ll> F(2);
	F.reserve(87);
	F[0] = 1;
	F[1] = 2;
	while(F.back() < r) F.emplace_back(F.back() + *(F.end()-2));
	vs s;
	s.reserve(86);
	rep(i, (int)F.size()) {
		if(F[i] >= l and F[i] <= r) s.emplace_back(to_string(F[i]));
	}
	sort(all(s));
	debug(s);
	vs s_(1);
	rep(i, (int)s.size()) {
		rep(j, (int)s[i].size()-1) {
			s_.emplace_back(s[i].substr(0, j+1));
		}
	}
	sort(all(s_));
	s_.erase(unique(all(s_)), s_.end());
	debug(s_);
	int u = s_.size();
	vvi X(u, vi(10, -1));
	rep(i, u) {
		rep(j, 10) {
			string h = s_[i] + char('0'+j);
			int z;
			rep(k, h.size()) {
				auto itr = lower_bound(all(s), h.substr(k));
				if(itr != s.end() and *itr == h.substr(k)) goto OUT;
			}
			while(true) {
				z = lower_bound(all(s_), h) - s_.begin();
				if(z != u and h == s_[z]) break;
				h = h.substr(1);
			}
			X[i][j] = z;
OUT:;
		}
	}
	vector<mint> dp(u), dpp(u);
	dp[0] = 1;
	rep(i, n) {
		fill(all(dpp), mint());
		rep(j, u) if(dp[j] != mint()) {
			rep(k, 10) {
				if(X[j][k] == -1) continue;
				dpp[X[j][k]] += dp[j];
			}
		}
		dp.swap(dpp);
	}
	cout << accumulate(all(dp), mint())-1 << endl;
}
0