結果

問題 No.695 square1001 and Permutation 4
コンテスト
ユーザー ゆにぽけ
提出日時 2024-01-03 15:48:08
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
MLE  
実行時間 -
コード長 3,488 bytes
コンパイル時間 1,192 ms
コンパイル使用メモリ 125,496 KB
最終ジャッジ日時 2025-02-18 16:01:57
ジャッジサーバーID
（参考情報） 		judge3 / judge3
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 * 2
other AC * 5 MLE * 7
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 # 

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <array>
#include <cctype>
#include <cstring>
#include <cstdlib>
#include <cassert>
#include <cmath>
#include <ctime>
#include <iomanip>
#include <numeric>
#include <stack>
#include <queue>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <bitset>
#include <random>
#include <utility>
#include <functional>
using namespace std;
template<int m> struct modint
{
	private:
	unsigned int value;
	static constexpr int mod() {return m;}

	public:
	constexpr modint(const long long x = 0) noexcept
	{
		long long y = x;
		if(y < 0 || y >= mod())
		{
			y %= mod();
			if(y < 0) y += mod();
		}
		value = (unsigned int)y;
	}
	constexpr unsigned int val() noexcept {return value;}
	constexpr modint &operator+=(const modint &other) noexcept
	{
		value += other.value;
		if(value >= mod()) value -= mod();
		return *this;
	}
	constexpr modint &operator-=(const modint &other) noexcept
	{
		unsigned int x = value;
		if(x < other.value) x += mod();
		x -= other.value;
		value = x;
		return *this;
	}
	constexpr modint &operator*=(const modint &other) noexcept
	{
		unsigned long long x = value;
		x *= other.value;
		value = (unsigned int) (x % mod());
		return *this;
	}
	constexpr modint &operator/=(const modint &other) noexcept
	{
		return *this *= other.inverse();
	}
	constexpr modint inverse() const noexcept
	{
		assert(value);
		long long a = value,b = mod(),x = 1,y = 0;
		while(b)
		{
			long long q = a/b;
			a -= q*b; swap(a,b);
			x -= q*y; swap(x,y);
		}
		return modint(x);
	}
	constexpr modint power(long long N) const noexcept
	{
		assert(N >= 0);
		modint p = *this,ret = 1;
		while(N)
		{
			if(N & 1) ret *= p;
			p *= p;
			N >>= 1;
		}
		return ret;
	}
	constexpr modint operator+() {return *this;}
	constexpr modint operator-() {return modint() - *this;}
	constexpr modint &operator++(int) noexcept {return *this += 1;}
	constexpr modint &operator--(int) noexcept {return *this -= 1;}
	friend modint operator+(const modint& lhs, const modint& rhs) {return modint(lhs) += rhs;}
	friend modint operator-(const modint& lhs, const modint& rhs) {return modint(lhs) -= rhs;}
	friend modint operator*(const modint& lhs, const modint& rhs) {return modint(lhs) *= rhs;}
	friend modint operator/(const modint& lhs, const modint& rhs) {return modint(lhs) /= rhs;}
	friend ostream &operator<<(ostream &os,const modint &x) {return os << x.value;}
};
/* using mint = modint<998244353>; */
using mint = modint<1000000007>;
template<class T> struct BIT
{
	private:
	int N;
	vector<T> node;

	public:

	BIT() : N(0) {}
	BIT(int N) : N(N), node(N) {}

	void add(int pos,T x)
	{
		assert(0 <= pos && pos < N);
		pos++;
		while(pos <= N)
		{
			node[pos-1] += x;
			pos += pos & -pos;
		}
	}

	T sum(int l,int r)
	{
		assert(0 <= l && l <= N && r <= N);
		return sum(r) - sum(l);
	}

	T sum(int r)
	{
		T ret = 0;
		while(r > 0)
		{
			ret += node[r-1];
			r -= r & -r;
		}
		return ret;
	}

	T sum() {return sum(N);}
	
};
const long long mod = 100000000000000007;
void solve()
{
	int N,M;
	cin >> N >> M;
	vector<long long> dp(N);
	vector<int> x(M);
	for(int i = 0;i < M;i++) cin >> x[i];
	dp[0] = 1;
	for(int i = 0;i < N;i++)for(int j = 0;j < M;j++) if(i + x[j] < N)
	{
		dp[i + x[j]] += dp[i];
		dp[i + x[j]] %= mod;
	}
	cout << dp[N-1] << endl;
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int tt = 1;
	/* cin >> tt; */
	while(tt--) solve();
}
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