Submission #987353

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
987353	2024-05-22 15:57:23	AlphaMale06	The Xana coup (BOI21_xanadu)	C++17	100 / 100	65 ms	15712 KiB

xanadu

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#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N = 1e5+3;
int dp[N][2][2];
int a[N];
vector<int> g[N];
void dfs(int v, int p){
    if(g[v].size()==1){
        dp[v][a[v]][0]=0;
        dp[v][1-a[v]][1]=1;
        dp[v][a[v]][1]=1e6;
        dp[v][1-a[v]][0]=1e6;
        return;
    }
    for(int to : g[v]){
        if(to!=p){
            dfs(to, v);
        }
    }
    int mn=0, par=a[v], mnadd=1e9;
    for(int to : g[v]){
        if(to==p)continue;
        if(dp[to][0][0]<dp[to][0][1]){
            mn+=dp[to][0][0];
            mnadd=min(mnadd, dp[to][0][1]-dp[to][0][0]);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 40 / 40
• Subtask 5: 30 / 30