Submission #885994

#	Time	Username	Problem	Language	Result	Execution time	Memory
885994		serifefedartar	Džumbus (COCI19_dzumbus)	C++17	110 / 110	270 ms	13380 KiB

dzumbus

#include <bits/stdc++.h>
using namespace std;
 
#define fast ios::sync_with_stdio(0);cin.tie(0);
#define s second
#define f first
typedef long long ll;
const ll MOD = 30013;
const ll LOGN = 21;
const ll MAXN = 1100;
#define int long long

vector<vector<int>> graph;
vector<int> D, dp[MAXN][3];

vector<int> add(const vector<int> &A, const vector<int> &B) {
	vector<int> res(A.size() + B.size() - 1, (ll)1e16);
	for (int i = 0; i < A.size(); i++) {
		for (int j = 0; j < B.size(); j++)
			res[i+j] = min(res[i+j], A[i] + B[j]);
	}
	return res;
}

vector<int> minimize(vector<int> A, const vector<int> &B) {
	while (A.size() < B.size())
		A.push_back((ll)1e16);
	for (int i = 0; i < B.size(); i++)
		A[i] = min(A[i], B[i]);
	return A;
}

bool vis[MAXN];
int T = 0;
void dfs(int node) {
	vis[node] = 1;
	dp[node][0] = {0};
	dp[node][1] = {(ll)1e16, D[node]};
	for (auto u : graph[node]) {
		if (vis[u])
			continue ;
		dfs(u);
		dp[node][0] = add(dp[node][0], minimize(dp[u][0], dp[u][2]));
		dp[node][2] = minimize(add(dp[node][1], minimize(dp[u][1], dp[u][2])),
							add(dp[node][2], minimize(minimize(dp[u][0], dp[u][1]), dp[u][2])));
		dp[node][1] = add(dp[node][1], dp[u][0]);
	}
}

signed main() {
	fast
	int N, M, a, b;
	cin >> N >> M;

	graph = vector<vector<int>>(N+1, vector<int>());
	D = vector<int>(N+1);
	for (int i = 1; i <= N; i++)
		cin >> D[i];
	for (int i = 0; i < M; i++) {
		cin >> a >> b;
		graph[a].push_back(b);
		graph[b].push_back(a);
	}

	vector<int> res = {0};
	for (int i = 1; i <= N; i++) {
		if (!vis[i]) {
			dfs(i);
			res = add(res, minimize(dp[i][0], dp[i][2]));
		}
	}

	for (int i = (int)res.size() - 2; i >= 0; i--)
		res[i] = min(res[i+1], res[i]);

	int Q, q, val;
	cin >> Q;
	while (Q--) {
		cin >> val;

		q = (upper_bound(res.begin(), res.end(), val) - res.begin()) - 1;
		cout << q << endl;
	}
}

Compilation message (stderr)

dzumbus.cpp: In function 'std::vector<long long int> add(const std::vector<long long int>&, const std::vector<long long int>&)':
dzumbus.cpp:18:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |  for (int i = 0; i < A.size(); i++) {
      |                  ~~^~~~~~~~~~
dzumbus.cpp:19:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |   for (int j = 0; j < B.size(); j++)
      |                   ~~^~~~~~~~~~
dzumbus.cpp: In function 'std::vector<long long int> minimize(std::vector<long long int>, const std::vector<long long int>&)':
dzumbus.cpp:28:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |  for (int i = 0; i < B.size(); i++)
      |                  ~~^~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 30 / 30
• Subtask 4: 30 / 30