結果

問題 No.526 フィボナッチ数列の第N項をMで割った余りを求める
コンテスト
ユーザー nok0
提出日時 2020-09-14 12:27:52
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 16 ms / 2,000 ms
コード長 10,670 bytes
コンパイル時間 1,947 ms
コンパイル使用メモリ 203,368 KB
最終ジャッジ日時 2025-01-14 14:46:51
ジャッジサーバーID
（参考情報） 		judge3 / 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 * 12
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘void scan(char*)’:
main.cpp:57:28: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   57 | void scan(char a[]) { scanf("%s", a); }
      |                       ~~~~~^~~~~~~~~

ソースコード

diff # 

/**
 *	author: nok0
 *	created: 2020.09.14 11:55:35
**/
#ifdef LOCAL
#define _GLIBCXX_DEBUG
#endif
#include<bits/stdc++.h>
using namespace std;
#pragma region Macros
#define ll long long
#define ld long double
#define FOR(i,l,r) for(int i=(l);i<(r);++i)
#define REP(i,n) FOR(i,0,n)
#define REPS(i,n) FOR(i,1,n+1)
#define RFOR(i,l,r) for(int i=(l);i>=(r);--i)
#define RREP(i,n) RFOR(i,n-1,0)
#define RREPS(i,n) RFOR(i,n,1)
#define pb push_back
#define eb emplace_back
#define SZ(x) ((int)(x).size())
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
template<class T = int> using V = vector<T>;
template<class T = int> using VV = V<V<T>>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
#define VEC(type, name, size)\
	V<type> name(size);\
	IN(name)
#define VVEC(type, name, h, w)\
	VV<type> name(h, V<type>(w));\
	IN(name)
#define INT(...)\
	int __VA_ARGS__;\
	IN(__VA_ARGS__)
#define LL(...)\
	ll __VA_ARGS__;\
	IN(__VA_ARGS__)
#define STR(...)\
	string __VA_ARGS__;\
	IN(__VA_ARGS__)
#define CHAR(...)\
	char __VA_ARGS__;\
	IN(__VA_ARGS__)
#define DOUBLE(...)\
	DOUBLE __VA_ARGS__;\
	IN(__VA_ARGS__)
#define LD(...)\
	LD __VA_ARGS__;\
	IN(__VA_ARGS__)
void scan(int &a) { cin >> a; }
void scan(long long &a) { cin >> a; }
void scan(char &a) { cin >> a; }
void scan(double &a) { cin >> a; }
void scan(long double &a) { cin >> a; }
void scan(char a[]) { scanf("%s", a); }
void scan(string &a) { cin >> a; }
template <class T> void scan(V<T> &);
template <class T, class L> void scan(pair<T, L> &);
template <class T> void scan(V<T> &a) { for(auto &i : a) scan(i); }
template <class T, class L> void scan(pair<T, L> &p){ scan(p.first); scan(p.second); }
template <class T> void scan(T &a) { cin >> a; }
void IN() {}
template <class Head, class... Tail> void IN(Head &head, Tail &... tail) { scan(head); IN(tail...); }
template <class T> inline void print(T x){ cout << x << '\n';}
template <typename T1, typename T2>
istream &operator>>(istream &is, pair<T1, T2> &p){
	is >> p.first >> p.second;
	return is;
}
template <typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> &p){
	os << p.first << " " << p.second;
	return os;
}
template <class T>
ostream &operator<<(ostream &os, const V<T> &v){
	REP(i, SZ(v)){
		if(i) os << " ";
		os << v[i];
	}
	return os;
}
//debug
template <typename T>
void view(const V<T> &v){
	cerr << "{ ";
	for(const auto &e : v){
		cerr << e << ", ";
	}
	cerr << "\b\b }";
}
template <typename T>
void view(const VV<T> &vv){
	cerr << "{\n";
	for(const auto &v : vv){
		cerr << "\t";
		view(v);
		cerr << "\n";
	}
	cerr << "}";
}
template <typename T, typename U>
void view(const V<pair<T, U>> &v){
	cerr << "{\n";
	for(const auto &c : v) cerr << "\t(" << c.first << ", " << c.second << ")\n";
	cerr << "}";
}
template <typename T, typename U>
void view(const map<T, U> &m){
	cerr << "{\n";
	for(auto &t : m) cerr << "\t[" << t.first << "] : " << t.second << "\n";
	cerr << "}";
}
template <typename T, typename U>
void view(const pair<T, U> &p){ cerr << "(" << p.first << ", " << p.second << ")";}
template <typename T>
void view(const set<T> &s) {
	cerr << "{ ";
	for(auto &t : s) {
		view(t);
		cerr << ", ";
	}
	cerr << "\b\b }";
}
template <typename T>
void view(T e) { cerr << e;}
#ifdef LOCAL
void debug_out() {}
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
	view(H);
	cerr << ", ";
	debug_out(T...);
}
#define debug(...)                                           \
	do{                                                     \
		cerr << __LINE__ << " [" << #__VA_ARGS__ << "] : ["; \
		debug_out(__VA_ARGS__);                              \
		cerr << "\b\b]\n";                                   \
	} while(0)
#else
#define debug(...) (void(0))
#endif
template <class T> V<T> press(V<T> &x){ 
	V<T> res = x;
	sort(all(res));
	res.erase(unique(all(res)), res.end());
	REP(i, SZ(x)){
		x[i] = lower_bound(all(res), x[i]) - res.begin();
	}
	return res;
}
template<class T> inline bool chmin(T& a, T b) {if (a > b) {a = b; return true; }return false; }
template<class T> inline bool chmax(T& a, T b) {if (a < b) {a = b; return true; }return false; }
inline void Yes(bool b = true) {cout << (b ? "Yes" : "No") << '\n';}
inline void YES(bool b = true) {cout << (b ? "YES" : "NO") << '\n';}
inline void err(bool b = true) {if(b) {cout << -1 << '\n'; exit(0);}}
template<class T> inline void fin(bool b = true, T e = 0) {if(b) {cout << e << '\n'; exit(0);}}
template<class T> T divup(T x, T y) {return (x+(y-1))/y;}
template <typename T> T pow(T a, long long n, T e = 1) {T ret = e; while (n) {if (n & 1) ret *= a; a *= a; n >>= 1; } return ret; }
struct iofast{iofast(){ios::sync_with_stdio(false); cin.tie(nullptr); cout << fixed << setprecision(15);}}iofast_;
const int inf = 1e9;
const ll INF = 1e18;
#pragma endregion

template<typename T>
struct Matrix{
private:
	std::vector<std::vector<T>> A;

	static Matrix I(size_t n){
		Matrix mat(n);
		for(int i = 0; i < n; i++) mat[i][i] = 1;
		return mat;
	}

public:
	Matrix() {}

	Matrix(std::vector<std::vector<T>> &vvec){ A = vvec;}

	Matrix(size_t n, size_t m) : A(n, std::vector<T>(m, 0)) {}

	Matrix(size_t n, size_t m, T init) : A(n, std::vector<T>(m, init)) {}

	Matrix(size_t n, std::vector<T> &vec) : A(n, vec) {}

	Matrix(size_t n) : A(n, std::vector<T>(n, 0)) {}

	size_t height() const {return A.size();}

	size_t width() const {return A[0].size();}

	inline const std::vector<T> &operator[] (int k) const{
		return A[k];
	}

	inline std::vector<T> &operator[] (int k){
		return A[k];
	}

	Matrix &operator+= (const Matrix &B){
		size_t n = height(), m = width();
		assert(n == B.height() and m == B.width());
		for(int i = 0; i < n; i++) for(int j = 0; j < m; j++)
			(*this)[i][j] += B[i][j];
		return *this;
	}

	Matrix &operator-= (const Matrix &B){
		size_t n = height(), m = width();
		assert(n == B.height() and m == B.width());
		for(int i = 0; i < n; i++) for(int j = 0; j < m; j++)
			(*this)[i][j] -= B[i][j];
		return *this;
	}

	Matrix &operator*= (const Matrix &B){
		size_t n = height(), m = B.width(), p = width();
		assert(p == B.height());
		std::vector<std::vector<T>> C(n, std::vector<T>(m, 0));
		for(int i = 0; i < n; i++) for(int j = 0; j < m; j++) for(int k = 0; k < p; k++)
			C[i][j] += (*this)[i][k] * B[k][j];
		A.swap(C);
		return *this;
	}

	Matrix &operator^= (long long k){
		Matrix B = Matrix::I(height());
		while(k > 0){
			if(k & 1) B *= (*this);
			*this *= *this;
			k >>= 1ll;
		}
		A.swap(B.A);
		return *this;
	}

	bool operator== (const Matrix &B){
		size_t n = height(), m = width();
		if(n != B.height() or m != B.width()) return false;
		for(int i = 0; i < n; i++) for(int j = 0; j < m; j++)
			if((*this)[i][j] != B[i][j]) return false;
		return true;
	}

	Matrix operator+ (const Matrix &B) const{
		return (Matrix(*this) += B);
	}

	Matrix operator- (const Matrix &B) const{
		return (Matrix(*this) -= B);
	}

	Matrix operator* (const Matrix &B) const{
		return (Matrix(*this) *= B);
	}

	Matrix operator^ (const long long &k) const{
		return (Matrix(*this) ^= k);
	}

	Matrix &operator+= (const T &t){
		int n = height(), m = width();
		for(int i = 0; i < n; i++) for(int j = 0; j < m; j++)
			(*this)[i][j] += t;
		return *this;
	}

	Matrix &operator-= (const T &t){
		int n = height(), m = width();
		for(int i = 0; i < n; i++) for(int j = 0; j < m; j++)
			(*this)[i][j] -= t;
		return *this;
	}

	Matrix &operator*= (const T &t){
		int n = height(), m = width();
		for(int i = 0; i < n; i++) for(int j = 0; j < m; j++)
			(*this)[i][j] *= t;
		return *this;
	}

	Matrix &operator/= (const T &t){
		int n = height(), m = width();
		for(int i = 0; i < n; i++) for(int j = 0; j < m; j++)
			(*this)[i][j] /= t;
		return *this;
	}

	Matrix operator+ (const T &t) const{
		return (Matrix(*this) += t);
	}

	Matrix operator- (const T &t) const{
		return (Matrix(*this) -= t);
	}

	Matrix operator* (const T &t) const{
		return (Matrix(*this) *= t);
	}

	Matrix operator/ (const T &t) const{
		return (Matrix(*this) /= t);
	}

	friend std::ostream &operator<< (std::ostream &os, Matrix &p){
		size_t n = p.height(), m = p.width();
		for(int i = 0; i < n; i++){
			os << '[';
			for(int j = 0; j < m; j++)
				os << p[i][j] << (j == m - 1 ? "]\n" : ",");
		}
		return (os);
	}

	T determinant(){
		Matrix B(*this);
		size_t n = height(), m = width();
		assert(n == m);
		T ret = 1;
		for(int i = 0; i < n; i++){
			int idx = -1;
			for(int j = i; j < n; j++)
				if(B[j][i] != 0) idx = j;
			if(idx == -1) return 0;
			if(i != idx){
				ret *= -1;
				swap(B[i], B[idx]);
			}
			ret *= B[i][i];
			T vv = B[i][i];
			for(int j = 0; j < n; j++) B[i][j] /= vv;
			for(int j = i + 1; j < n; j++){
				T a = B[j][i];
				for(int k = 0; k < n; k++){
					B[j][k] -= B[i][k] * a;
				}
			}
		}
		return ret;
	}
};

//ModInt
template <int &mod>
struct ModInt {
	ll x;
	ModInt() : x(0) {}
	ModInt(ll x_) {
		if ((x = x_ % mod + mod) >= mod) x -= mod;
	}
	ModInt& operator+=(ModInt rhs) {
		if ((x += rhs.x) >= mod) x -= mod;
		return *this;
	}
	ModInt& operator-=(ModInt rhs) {
		if ((x -= rhs.x) < 0) x += mod;
		return *this;
	}
	ModInt& operator*=(ModInt rhs) {
		x = (unsigned long long)x * rhs.x % mod;
		return *this;
	}
	ModInt& operator/=(ModInt rhs) {
		x = (unsigned long long)x * rhs.inv().x % mod;
		return *this;
	}
  
	ModInt operator-() const { return -x < 0 ? mod - x : -x; }
	ModInt operator+(ModInt rhs) const { return ModInt(*this) += rhs; }
	ModInt operator-(ModInt rhs) const { return ModInt(*this) -= rhs; }
	ModInt operator*(ModInt rhs) const { return ModInt(*this) *= rhs; }
	ModInt operator/(ModInt rhs) const { return ModInt(*this) /= rhs; }
	ModInt &operator++ () { *this += 1; return *this;}
	ModInt operator++ (int) { *this += 1; return *this - 1;}
	ModInt &operator-- () { *this -= 1; return *this;}
	ModInt operator-- (int) { *this -= 1; return *this + 1;}
	bool operator==(ModInt rhs) const { return x == rhs.x; }    
	bool operator!=(ModInt rhs) const { return x != rhs.x; }
	bool operator<=(ModInt rhs) const { return x <= rhs.x; }
	bool operator>=(ModInt rhs) const { return x >= rhs.x; }
	bool operator<(ModInt rhs) const { return x < rhs.x; }
	bool operator>(ModInt rhs) const { return x > rhs.x; }
	ModInt inv() const { return pow(*this, mod - 2); }
  
	friend ostream& operator<<(ostream& s, ModInt<mod> a) {
		s << a.x;
		return s;
	}
	friend istream& operator>>(istream& s, ModInt<mod>& a) {
		s >> a.x;
		return s;
	}
};

int main(){
	INT(n);
	static int m;
	cin >> m;
	using mint = ModInt<m>;
	Matrix<mint> A(2, 2, 1ll), B(2, 1);
	A[1][1] = 0;
	B[0][0] = 1;
	Matrix<mint> C = (A^(n - 1)) * B;
	print(C[1][0]);
}
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