Submission #48462

#	Time	Username	Problem	Language	Result	Execution time	Memory
48462		aleksami	Dostavljač (COCI18_dostavljac)	C++14	0 / 140	198 ms	2476 KiB

dostavljac

    #include <bits/stdc++.h>
     
    using namespace std;
    #define MAXN 505
    int n,m;
    int dp[MAXN][MAXN][2];
    int a[MAXN];
    vector <int> g[MAXN];
     
    void dfs(int v,int p)
    {
    	for(auto x:g[v])
    	{
    		if(x==p)continue;
    		dfs(x,v);
    		for(int i = m; i >= 0; i--)
    		{
              dp[v][i][0]=max(dp[v][i+1][0],dp[v][i][0]);
              dp[v][i][1]=max(dp[v][i+1][1],dp[v][i][1]);
    			for(int j = i; j >= 0; j--)
    			{
    				if(i-j-1>=0)dp[v][i][0]=max(dp[v][i][0],dp[v][j][1]+dp[x][i-j-1][0]);
    				if(i-j-2>=0)dp[v][i][1]=max(dp[v][i][1],dp[v][j][1]+dp[x][i-j-2][1]);
    			}
              dp[v][i][0]=max(dp[v][i][0],dp[v][i][1]);
    		}
    	}
    	for(int i = m; i >= 1; i--)
    	{
    		dp[v][i][0]=max(dp[v][i][0],dp[v][i-1][0]+a[v]);
    		dp[v][i][1]=max(dp[v][i][1],dp[v][i-1][1]+a[v]);
    		dp[v][i][0]=max(dp[v][i][0],dp[v][i][1]);
    	}
    }
     
    int main()
    {
    	ios_base::sync_with_stdio(false);
    	cin.tie(NULL);
    	cout.tie(NULL);
    	cin >> n >> m;
    	for(int i = 1; i <= n; i++)
    	{
    		cin >> a[i];
    	}
    	for(int i = 0; i < n-1; i++)
    	{
    		int u,v;
    		cin >> u >> v;
    		g[u].push_back(v);
    		g[v].push_back(u);
    	}
    	dfs(1,0);
    	cout << max(dp[1][m][0],dp[1][m][1]);
    	return 0;
    }

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 14
• Subtask 6: 0 / 14
• Subtask 7: 0 / 14
• Subtask 8: 0 / 14
• Subtask 9: 0 / 14
• Subtask 10: 0 / 14