結果

問題 No.1577 織姫と彦星2
ユーザー ゆにぽけゆにぽけ
提出日時 2023-10-17 18:47:29
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 212 ms / 2,000 ms
コード長 4,141 bytes
コンパイル時間 1,218 ms
コンパイル使用メモリ 142,788 KB
実行使用メモリ 9,344 KB
最終ジャッジ日時 2024-09-17 16:03:43
合計ジャッジ時間 8,184 ms
ジャッジサーバーID
(参考情報)
judge3 / judge4
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 3 ms
6,816 KB
testcase_01 AC 2 ms
6,944 KB
testcase_02 AC 3 ms
6,944 KB
testcase_03 AC 3 ms
6,940 KB
testcase_04 AC 3 ms
6,940 KB
testcase_05 AC 36 ms
6,944 KB
testcase_06 AC 11 ms
6,944 KB
testcase_07 AC 152 ms
8,064 KB
testcase_08 AC 55 ms
6,940 KB
testcase_09 AC 212 ms
9,344 KB
testcase_10 AC 51 ms
6,944 KB
testcase_11 AC 8 ms
6,940 KB
testcase_12 AC 91 ms
6,944 KB
testcase_13 AC 43 ms
6,944 KB
testcase_14 AC 120 ms
7,168 KB
testcase_15 AC 37 ms
6,944 KB
testcase_16 AC 165 ms
8,064 KB
testcase_17 AC 81 ms
6,944 KB
testcase_18 AC 3 ms
6,940 KB
testcase_19 AC 134 ms
7,680 KB
testcase_20 AC 103 ms
7,296 KB
testcase_21 AC 141 ms
8,192 KB
testcase_22 AC 150 ms
7,808 KB
testcase_23 AC 49 ms
6,940 KB
testcase_24 AC 202 ms
8,320 KB
testcase_25 AC 33 ms
6,944 KB
testcase_26 AC 51 ms
6,940 KB
testcase_27 AC 154 ms
7,424 KB
testcase_28 AC 106 ms
7,296 KB
testcase_29 AC 69 ms
6,940 KB
testcase_30 AC 80 ms
6,944 KB
testcase_31 AC 152 ms
8,064 KB
testcase_32 AC 5 ms
6,944 KB
testcase_33 AC 4 ms
6,944 KB
testcase_34 AC 63 ms
6,940 KB
testcase_35 AC 130 ms
7,680 KB
testcase_36 AC 139 ms
7,680 KB
testcase_37 AC 197 ms
8,832 KB
testcase_38 AC 195 ms
8,832 KB
testcase_39 AC 53 ms
6,940 KB
testcase_40 AC 58 ms
6,940 KB
testcase_41 AC 170 ms
8,064 KB
testcase_42 AC 99 ms
6,940 KB
testcase_43 AC 102 ms
6,940 KB
testcase_44 AC 6 ms
6,940 KB
testcase_45 AC 24 ms
6,944 KB
testcase_46 AC 32 ms
6,940 KB
testcase_47 AC 163 ms
7,680 KB
testcase_48 AC 58 ms
6,944 KB
testcase_49 AC 70 ms
6,940 KB
testcase_50 AC 47 ms
6,944 KB
testcase_51 AC 14 ms
6,940 KB
testcase_52 AC 195 ms
8,320 KB
testcase_53 AC 187 ms
8,448 KB
testcase_54 AC 76 ms
6,944 KB
testcase_55 AC 189 ms
8,064 KB
testcase_56 AC 38 ms
6,940 KB
testcase_57 AC 18 ms
6,940 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<cstring>
#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>
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>;

#include<algorithm>
#include<vector>
#include<cassert>
using namespace std;
struct UnionFind
{
	private:
	int n;
	vector<int> par,siz;

	public:
	UnionFind(int n) :n(n),par(n,-1),siz(n,1) {}

	int root(int u)
	{
		assert(0 <= u && u < n);
		return (par[u] < 0 ? u:par[u] = root(par[u]));
	}

	bool same(int u,int v)
	{
		assert(0 <= u && u < n && 0 <= v && v < n);
		return root(u) == root(v);
	}

	bool unite(int u,int v)
	{
		assert(0 <= u && u < n && 0 <= v && v < n);
		u = root(u),v = root(v);
		if(u == v) return false;

		if(siz[u] < siz[v]) swap(u,v);

		siz[u] += siz[v];
		par[v] = u;

		return true;
	}

	int size(int u)
	{
		assert(0 <= u && u < n);
		return siz[root(u)];
	}

	vector<vector<int>> components()
	{
		vector<vector<int>> ret(n);
		for(int u = 0;u < n;u++) ret[root(u)].push_back(u);

		ret.erase(remove_if(ret.begin(),ret.end(),[](vector<int> v) { return v.empty();}),ret.end());

		return ret;
	}
};

int N,A[1 << 16];
vector<int> G[1 << 16];
int dp[1 << 16];
void solve()
{
	cin >> N;
	map<int,int> mp;
	cin >> A[0] >> A[N+1];
	mp[A[0]] = 0,mp[A[N+1]] = N+1;
	for(int i = 1;i <= N;i++)
	{
		cin >> A[i];
		mp[A[i]] = i;
	}
	for(int i = 0;i <= N+1;i++)
	{
		for(int k = 0;k < 30;k++)
		{
			int B = A[i] ^ 1 << k;
			if(mp.count(B))
			{
				int j = mp[B];
				G[i].push_back(j);
				G[j].push_back(i);
			}
		}
	}
	for(int i = 0;i <= N+1;i++) dp[i] = -1;
	dp[0] = 0;
	queue<int> Q;
	Q.push(0);
	while(!Q.empty())
	{
		int u = Q.front();
		Q.pop();

		for(int v:G[u]) if(dp[v] < 0) dp[v] = dp[u] + 1,Q.push(v);
	}
	if(dp[N+1] < 0) cout << -1 << endl;
	else cout << dp[N+1]-1 << endl;
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int tt = 1;
	//cin >> tt;
	while(tt--) solve();
}
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