제출 #1089209

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1089209		ymm	항공 노선도 (JOI18_airline)	C++17	100 / 100	438 ms	29524 KiB

Alice

#include "Alicelib.h"
#include <bits/stdc++.h>
#define Loop(x,l,r) for (ll x = (l); x < (ll)(r); ++x)
#define LoopR(x,l,r) for (ll x = (r)-1; x >= (ll)(l); --x)
typedef long long ll;
typedef std::pair<int, int> pii;
typedef std::pair<ll , ll > pll;
using namespace std;

void Alice( int N, int M, int A[], int B[] ){
	vector<pii> vec;
	Loop (i,0,M)
		vec.emplace_back(A[i], B[i]);
	Loop (i,0,N) Loop (b,0,10)
		if ((i>>b)&1)
			vec.emplace_back(i, N + b);
	Loop (b,0,10)
		vec.emplace_back(N + b, N + 10);
	Loop (i,0,N+10)
		vec.emplace_back(i, N + 11);
	Loop (b,1,10)
		vec.emplace_back(N + b - 1, N + b);
	InitG(N + 12, vec.size());
	Loop (i,0,vec.size()) {
		auto [x, y] = vec[i];
		MakeG(i, x, y);
	}
}

Bob

#include "Boblib.h"
#include <bits/stdc++.h>
#define Loop(x,l,r) for (ll x = (l); x < (ll)(r); ++x)
#define LoopR(x,l,r) for (ll x = (r)-1; x >= (ll)(l); --x)
typedef long long ll;
typedef std::pair<int, int> pii;
typedef std::pair<ll , ll > pll;
using namespace std;

namespace {

struct Eater {
	template<class T>
	Eater &operator<<(const T &) { return *this; }
} eater;
#define cerr eater

const int N = 1010;
vector<int> A[N];
bool is_new[N];
int num[N];
int n;

array<int, 12> find_bits()
{
	int mx = 0;
	{
		Loop (i,0,n+12)
			if (A[mx].size() < A[i].size())
				mx = i;
	}

	int ptr;
	{
		vector<bool> adj(n + 12);
		for (auto v : A[mx])
			adj[v] = 1;
		adj[mx] = 1;
		ptr = 0;
		while (adj[ptr])
			ptr++;
	}

	vector<int> path;
	{
		int beg = -1, end = -1;
		set<int> bits(A[ptr].begin(), A[ptr].end());
		for (int v : A[ptr]) {
			int cnt = 0;
			for (int u : A[v])
				cnt += bits.count(u);
			if (cnt != 1)
				continue;
			if (beg == -1) {
				beg = v;
				continue;
			}
			if (A[beg].size() > A[v].size()) {
				end = v;
			} else {
				end = beg;
				beg = v;
			}
		}

		cerr << "beg = " << beg << ", end = " << end << '\n';
		cerr << "bits = ";
		for (int v : bits)
			cerr << v << ", ";
		cerr << '\n';

		int pre = -1;
		path = {beg};
		for (int v = beg; v != end;) {
			int nxt = -1;
			cerr << "v = " << v << '\n';
			for (int u : A[v])
				if (bits.count(u) && u != pre)
					nxt = u;
			cerr << "nxt = " << nxt << '\n';
			assert(nxt != -1);
			path.emplace_back(nxt);
			if (path.size() > 10) {
				cerr << "bad!\n";
				break;
			}
			pre = v;
			v = nxt;
		}
	}

	array<int, 12> ans;
	Loop (i,0,10)
		ans[i] = path[i];
	ans[10] = ptr;
	ans[11] = mx;
	
	fill(is_new, is_new + n + 12, false);
	for (int v : ans)
		is_new[v] = true;

	return ans;
}


}

void Bob( int V, int U, int C[], int D[] ){
	n = V - 12;
	Loop (i,0,U) {
		A[C[i]].push_back(D[i]);
		A[D[i]].push_back(C[i]);
	}
	auto bits = find_bits();
	Loop (b,0,10) {
		for (int v : A[bits[b]])
			num[v] |= (1 << b);
	}
	vector<pii> ans;
	Loop (i,0,U) {
		int v = C[i], u = D[i];
		if (is_new[v] || is_new[u])
			continue;
		ans.emplace_back(num[v], num[u]);
	}
	InitMap(n, ans.size());
	for (auto [x, y] : ans)
		MakeMap(x, y);
}

• Subtask 1: 22 / 22
• Subtask 2: 15 / 15
• Subtask 3: 63 / 63