Submission #1290947

#	Time	Username	Problem	Language	Result	Execution time	Memory
1290947		qweqer	Nestabilnost (COI23_nestabilnost)	C++20	0 / 100	2 ms	1080 KiB

code1

#include <bits/stdc++.h>
#define FOR(i, beg, ed, etr) for(ll i = beg;i <= ed;i += etr)
#define FORN(i, beg, ed, etr) for(ll i = beg;i >= ed;i -= etr)
#define all(x) x.begin(), x.end()
#define F first
#define pb push_back
#define con continue
#define S second
using namespace std;
typedef long long ll;
typedef double db;
typedef long double ld;
typedef pair<int,int> pii;


const ll inf = 1e9;
const ll INF = 1e18;
const ll N = 5e3 + 5;
const ll maxn = 5e6;
const ll MOD = 998244353;
int a[N],f[N];
vector <int> g[N];
int dep[N],id[N];
void dfs(int v,int p = 0){
    id[dep[v]] = a[v];
    for(int  to : g[v]){
        if(to == p)con;
        dep[to] = dep[v] + 1;
        dfs(to,v);
    }
}
int dp[N],suf[N];
void solve(){
    int n;cin >> n;
    FOR(i, 1, n, 1){
        cin >> a[i];
    }
    FOR(i, 1, n, 1){
        cin >> f[i];
    }
    FORN(i, n, 1, 1){
        suf[i] = max(suf[i+1],f[i]);
    }
    bool s1 = 1;
    FOR(i, 2, n, 1){
        int u,v;cin >> u >> v;
        g[u].pb(v);
        g[v].pb(u);
        if(g[v].size() > 2 || g[u].size() > 2)s1 = 0;
    }
    if(g[1].size() > 1)s1 = 0;
    dep[1] = 1;
    dfs(1);
    FOR(i, 1, n, 1){
        dp[i] = dp[i-1] + suf[id[i] + 1];
        int mx = id[i];
        bool was = 0;
        FORN(j, i- 1, 1, 1){
            if(id[j] + 1== id[j+1]){
            }
            else if(id[j+1] == 0){
                int d = id[j];
                if(mx > id[j] || (was == 1 && id[j] + 1 != mx))break;
                mx = id[j] + 1;
                was = 1;
            }
            else break;
            if(was == 0)dp[i] = max(dp[i],dp[j-1] + suf[mx+1]);
            else dp[i] = max(dp[i],dp[j-1] + f[mx]);
        }
    }
    cout << dp[n];
}
main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll abd = 1;
//    cin >> abd;
    FOR(i, 1, abd, 1){
        solve();
    }
}

Compilation message (stderr)

code1.cpp:74:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   74 | main(){
      | ^~~~

• Subtask 1: 0 / 12
• Subtask 2: 0 / 20
• Subtask 3: 0 / 7
• Subtask 4: 0 / 22
• Subtask 5: 0 / 39