結果

問題 No.2219 Re:010
ユーザー ゆにぽけゆにぽけ
提出日時 2024-03-12 06:12:58
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 8 ms / 2,000 ms
コード長 4,110 bytes
コンパイル時間 1,401 ms
コンパイル使用メモリ 134,520 KB
実行使用メモリ 5,888 KB
最終ジャッジ日時 2024-09-29 22:09:46
合計ジャッジ時間 2,728 ms
ジャッジサーバーID
(参考情報)
judge5 / judge2
このコードへのチャレンジ
(要ログイン)

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 2 ms
5,248 KB
testcase_01 AC 2 ms
5,248 KB
testcase_02 AC 2 ms
5,248 KB
testcase_03 AC 8 ms
5,504 KB
testcase_04 AC 3 ms
5,248 KB
testcase_05 AC 7 ms
5,248 KB
testcase_06 AC 3 ms
5,248 KB
testcase_07 AC 4 ms
5,248 KB
testcase_08 AC 7 ms
5,376 KB
testcase_09 AC 7 ms
5,376 KB
testcase_10 AC 5 ms
5,248 KB
testcase_11 AC 5 ms
5,248 KB
testcase_12 AC 5 ms
5,248 KB
testcase_13 AC 8 ms
5,888 KB
testcase_14 AC 8 ms
5,760 KB
testcase_15 AC 8 ms
5,888 KB
testcase_16 AC 7 ms
5,888 KB
testcase_17 AC 8 ms
5,888 KB
testcase_18 AC 5 ms
5,888 KB
testcase_19 AC 7 ms
5,888 KB
testcase_20 AC 7 ms
5,888 KB
testcase_21 AC 2 ms
5,248 KB
testcase_22 AC 2 ms
5,248 KB
testcase_23 AC 2 ms
5,248 KB
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 <vector>
#include <algorithm>
#include <array>
#include <iterator>
#include <string>
#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 S>
struct combination
{
	private:
	vector<S> f,invf;

	public:
	combination(int N = 0) : f(1,1),invf(1,1)
	{
		update(N);
	}

	void update(int N)
	{
		if((int)f.size() > N) return;
		int pi = (int)f.size();
		N = max(N,pi*2);

		f.resize(N+1),invf.resize(N+1);

		for(int i = pi;i <= N;i++) f[i] = f[i-1]*i;
		invf[N] = S(1)/f[N];
		for(int i = N-1;i >= pi;i--) invf[i] = invf[i+1]*(i+1);
	}

	S factorial(int N)
	{
		update(N);
		return f[N];
	}

	S invfactorial(int N)
	{
		update(N);
		return invf[N];
	}

	S P(int N,int K)
	{
		assert(0 <= K && K <= N);
		update(N);
		return f[N]*invf[N-K];
	}

	S C(int N,int K)
	{
		assert(0 <= K && K <= N);
		update(N);
		return f[N]*invf[K]*invf[N-K];
	}
};
combination<mint> C;

void Main()
{
	string S;
	cin >> S;
	int N = (int)S.size();
	vector<int> Z(N + 1),Q(N + 1);
	for(int i = 0;i < N;i++)
	{
		Z[i + 1] = Z[i] + (S[i] == '0');
		Q[i + 1] = Q[i] + (S[i] == '?');
	}
	mint ans = 0;
	vector<mint> T(N + 1);
	T[0] = 1;
	for(int i = 1;i <= N;i++)
	{
		T[i] = T[i - 1] * 2;
	}
	for(int i = 0;i < N;i++)
	{
		if(S[i] == '1' || S[i] == '?')
		{
			mint L = 0,R = 0;
			{
				int c = Z[i];
				int q = Q[i];
				L += c * T[q];
				if(q > 0)
				{
					L += q * T[q - 1];
				}
			}
			{
				int c = Z[N] - Z[i + 1];
				int q = Q[N] - Q[i + 1];
				R += c * T[q];
				if(q > 0)
				{
					R += q * T[q - 1];
				}
			}
			ans += L * R;
		}
	}
	cout << ans << "\n";
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int tt = 1;
	/* cin >> tt; */
	while(tt--) Main();
}

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