Submission #862800

#	Time	Username	Problem	Language	Result	Execution time	Memory
862800		Berryisbetter	Cyberland (APIO23_cyberland)	C++17	21 / 100	3059 ms	530544 KiB

cyberland

#include "cyberland.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long double;
using vll = vector<ll>;
using vvll = vector<vll>;
const ll INF = 1e16;

vll v; vector<vector<pair<ll, ll>>>g;
ll h,n;
void dfs(ll x) {
	if (v[x]++) return;
	if ((int)x%(int)n==h) return;
	for (auto i : g[x]) {
		dfs(i.first);
	}
}
double solve(int N, int M, int K, int H, std::vector<int> x, std::vector<int> y, std::vector<int> c, std::vector<int> arr) {
	ll m = M, k = min(K, 32) + 1; h = H, n = N;
	v = vll(n*k); g=vector<vector<pair<ll, ll>>>(n*k);
	for (ll j = 0; j < k; j++) {
		for (ll i = 0; i < m; i++) {
			g[x[i] + j * n].push_back({ y[i] + j * n, c[i]*1.0/(1<<(int)j)});
			g[y[i] + j * n].push_back({ x[i] + j * n, c[i]*1.0/ (1 << (int)j)});
			if (j && arr[x[i]] == 2) {
				g[x[i] + j * n].push_back({ y[i] + (j-1) * n, c[i] * 1.0 / (1 << (int)j) });
			}
			if (j && arr[y[i]] == 2) {
				g[y[i] + j * n].push_back({ x[i] + (j - 1) * n, c[i] * 1.0 / (1 << (int)j) });
			}
		}
	}
	for (ll i = 0; i < k; i++) {
		dfs(i*n);
	}
	vll save = v;
	v = vll(n * k, INF);
	priority_queue<pair<ll,ll>, std::vector<pair<ll,ll>>, std::greater<pair<ll,ll>>> q;
	q.push({ 0,0 }); v[0] = 0;
	for (ll j = 0; j < k; j++) {
		for (ll i = 0; i < n; i++) {
			if (arr[i] == 0&&save[i+j*n]) {
				q.push({ 0, i + j * n });
				v[i + j * n] = 0;
			}
		}
	}
	while (q.size()) {
		ll ce= q.top().second; q.pop();
		if ((int)ce%(int)n==h) {
			continue;
		}
		for (auto i : g[ce]) {
			if (v[i.first] <= v[ce] + i.second) {
				continue;
			}
			v[i.first] = v[ce] + i.second;
			q.push({ v[i.first],i.first });
		}
	}
	return v[h];
}

• Subtask 1: 0 / 5
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 0 / 19
• Subtask 5: 0 / 7
• Subtask 6: 0 / 16
• Subtask 7: 0 / 29
• Subtask 8: 0 / 3