Submission #678152

#	Time	Username	Problem	Language	Result	Execution time	Memory
678152		Tien_Noob	Paprike (COI18_paprike)	C++17	100 / 100	70 ms	19052 KiB

paprike

//Make CSP great again
//Vengeance
#include <bits/stdc++.h>
#define TASK "TESTCODE"
#define Log2(x) 31 - __builtin_clz(x)
using namespace std;
const int N = 1e5;
vector<int> adj[N + 1];
int res, a[N + 1], n, h;
void read()
{
    cin >> n >> h;
    for (int i = 1; i <= n; ++ i)
    {
        cin >> a[i];
    }
    for (int i = 1; i < n; ++ i)
    {
        int u, v;
        cin >> u >> v;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
}
int DFS(int u, int p)
{
    vector<int> f;
    for (int v : adj[u])
    {
        if (v == p)
        {
            continue ;
        }
        f.push_back(DFS(v, u));
    }
    sort(f.begin(), f.end());
    int x = a[u];
    for (int i : f)
    {
        if (x + i <= h)
        {
            x += i;
        }
        else
        {
            ++res;
        }
    }
    return x;
}
void solve()
{
    DFS(1, 0);
    cout << res;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    if (fopen(TASK".INP", "r"))
    {
        freopen(TASK".INP", "r", stdin);
        //freopen(TASK".OUT", "w", stdout);
    }
    int t = 1;
    bool typetest = false;
    if (typetest)
    {
        cin >> t;
    }
    for (int __ = 1; __ <= t; ++ __)
    {
        //cout << "Case " << __ << ": ";
        read();
        solve();
    }
}

Compilation message (stderr)

paprike.cpp: In function 'int main()':
paprike.cpp:62:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |         freopen(TASK".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 13 / 13
• Subtask 3: 27 / 27
• Subtask 4: 49 / 49