Submission #894608

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
894608	2023-12-28 14:20:56	esomer	The Xana coup (BOI21_xanadu)	C++17	100 / 100	73 ms	15820 KiB

xanadu

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#include<bits/stdc++.h>
 
using namespace std;
#define int long long
const int N = 100000;
const int INF = 1e11;
vector<int> adj[N];
int dp[4][N]; //0 - I don't toggle. 1 - I toggle. 2, 3 - same but the camera is not off.
int initial[N];
void get0(int x, int p){
    if(initial[x] == 0){
        int ans = 0;
        vector<int> change;
        for(int node : adj[x]){
            if(node != p){
                ans += dp[0][node];
                change.push_back(dp[1][node] - dp[0][node]);
            }
        }
        sort(change.begin(), change.end());
        int mn = 0;
        int curr = 0;
        for(int i = 0; i + 1 < (int)change.size(); i += 2){
            curr += change[i] + change[i+1];
            mn = min(mn, curr);
        }
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 40 / 40
• Subtask 5: 30 / 30