Submission #878909

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
878909	2023-11-25 13:24:17	Mr_Ph	The Xana coup (BOI21_xanadu)	C++17	100 / 100	91 ms	37796 KiB

xanadu

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#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
typedef long long ll;
using namespace std;
using namespace __gnu_pbds;
template<class x>
using ordered_set = tree<x, null_type,less<x>, rb_tree_tag,tree_order_statistics_node_update>;
ll mod=(ll)1e9+7;
ll mod1=998244353;
///the defines :)
#define endl '\n'
#define vi vector<int>
#define ent(arr) for(int i=0;i<arr.size();i++)cin>>arr[i];
#define all(arr) arr.begin(),arr.end()
#define allr(arr) arr.rbegin(),arr.rend()
#define sz size()
#define int long long
int dp[200002][2][2];
int n;
vi arr;
vector<vi>adj;
int dfs(int node,int parent,int tg,int cur)
{
    int pog=arr[node]^tg^cur;
   // cout<<node<<" "<<parent<<" "<<pog<<endl;
    if(dp[node][tg][cur]!=-1)return dp[node][tg][cur];
    if(parent&&adj[node].sz==1)return (pog?1e9:cur);
    //odds and even thingies depending on pog, (i forgor)
    int x=adj[node].sz;
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 40 / 40
• Subtask 5: 30 / 30