Submission #847295

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
847295	2023-09-09 11:38:23	Ahmed57	The Xana coup (BOI21_xanadu)	C++17	100 / 100	105 ms	17372 KiB

xanadu

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#include <bits/stdc++.h>
using namespace std;
long long dp[100001][2][2];
vector<int> adj[100001];
long long arr[100001];
//0 i make myself not toggole , 1 i make myself toggole
//0 i am not toggole , i am toggole
void solve(int i,int pr){
    for(auto j:adj[i]){
        if(j==pr)continue;
        solve(j,i);
    }
    //0 0
    long long check = 0 , sum =0 , mi = 1e9;
    for(auto j:adj[i]){
        if(j==pr)continue;
        if(dp[j][0][arr[j]]<dp[j][1][arr[j]]){
            sum+=dp[j][0][arr[j]];
            check+=0;
        }else{
            sum+=dp[j][1][arr[j]];
            check+=1;
        }
        mi = min(mi,abs(dp[j][0][arr[j]]-dp[j][1][arr[j]]));
    }
    if((check%2)){
        sum+=mi;
    }
    dp[i][0][0] = sum;
    //0 1
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 40 / 40
• Subtask 5: 30 / 30