Submission #1083822

#	Time	Username	Problem	Language	Result	Execution time	Memory
1083822		mmdrzada	Burza (COCI16_burza)	C++17	0 / 160	1 ms	480 KiB

burza

#include <bits/stdc++.h>
 
using namespace std;
 
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef long long ll;
 
#define sep ' '
#define F first
#define S second
#define fastIO 	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pb push_back
#define kill(x) {cout << x << endl;return;}
const int N = 500;
const ll LLINF = 2e18;
const int INF = INT_MAX/2;
int n, k;
int h[N];
int par[N];
int cnt[N];
vi adj[N];
ll dp[N];
ll pf[N];
// check MAXN
// diffrence between extract and erase in multi set
 
void set_io() {
	fastIO;
	// freopen("guard.in", "r", stdin);
	// freopen("guard.out", "w", stdout);
}

void dfs(int v = 0, int p = -1) {
	h[v] = (p == -1 ? 0 : h[p] + 1);
	par[v] = p;
	if (h[v] == k) { // dp base
		dp[v] = INF;
		return;
	}
	if (adj[v].size() == 1 && adj[v][0] == p) {
		dp[v] = 0;
		return;
	}
	int k = 0;
	for(int i = 0 ; i < adj[v].size(); i ++) {
		int neigh = adj[v][i];
		if (neigh == p) {
			pf[i] = k;
			continue;
		}
		dfs(neigh, v);
		pf[i] = k;
		k += dp[neigh];
	}
	k = 0;
	ll ans = INF;
	for(int i = adj[v].size()-1 ; i >= 0 ; i --) {
		int neigh = adj[v][i];
		if (neigh == p)
			continue;
		ans = min(ans, pf[i] + 1ll + k);
		k += dp[neigh];
	}
	dp[v] = ans;
}

void solve() {
	cin >> n >> k;
	for(int i = 0, a, b ; i < n-1 ; i ++)
		cin >> a >> b,
		adj[--a].pb(--b), adj[b].pb(a);
	
	dfs();
	cout << (dp[0] <= k ? "DA" : "NE") << endl;
}
 
int main() {
	set_io();
	solve();
	return 0;
}

Compilation message (stderr)

burza.cpp: In function 'void dfs(int, int)':
burza.cpp:46:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |  for(int i = 0 ; i < adj[v].size(); i ++) {
      |                  ~~^~~~~~~~~~~~~~~

• Subtask 1: 0 / 16
• Subtask 2: 0 / 16
• Subtask 3: 0 / 16
• Subtask 4: 0 / 16
• Subtask 5: 0 / 16
• Subtask 6: 0 / 16
• Subtask 7: 0 / 16
• Subtask 8: 0 / 16
• Subtask 9: 0 / 16
• Subtask 10: 0 / 16