Submission #850495

#	Time	Username	Problem	Language	Result	Execution time	Memory
850495		Benmath	Chase (CEOI17_chase)	C++14	0 / 100	142 ms	96080 KiB

chase

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#include <bits/stdc++.h>

using namespace std;
int n;
int v;
long long int p[100010];
vector<int> adjl[100010];
int vis[100010];
long long int dpnula[100010][105];
long long int dp[100010][105];
void dfs(int s){
    vis[s]++;
    long long int suma = 0;
    for (int i = 0;i< adjl[s].size(); i++){
        if(vis[adjl[s][i]] == 0){
            suma = suma + p[adjl[s][i]];
        }
    }
    for (int i = 0;i < adjl[s].size(); i++){
        if (vis[adjl[s][i]] == 0){
            dfs(adjl[s][i]);
            for (int j = 1; j <=v; j++){
                dpnula[s][j] = max(dpnula[s][j], dpnula[adjl[s][i]][j-1] + suma);
                dpnula[s][j] = max(dpnula[s][j], dp[adjl[s][i]][j]);
                dp[s][j] = max(dp[s][j], dpnula[adjl[s][i]][j-1] + suma);
                dp[s][j] = max(dp[s][j], dp[adjl[s][i]][j]);
            }
        }
    } 
    
}
int main(){
    cin >> n;
    cin >> v;
    for(int i = 0; i < n; i++){
        cin >> p[i];
    }
    for(int i = 0; i < (n-1); i++){
        int a, b;
        cin >> a >> b;
        adjl[a].push_back(b);
        adjl[b].push_back(a);
    }
    dfs(1);
    cout << dp[1][v];
}

Compilation message (stderr)

chase.cpp: In function 'void dfs(int)':
chase.cpp:22:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for (int i = 0;i< adjl[s].size(); i++){
      |                    ~^~~~~~~~~~~~~~~~
chase.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for (int i = 0;i < adjl[s].size(); i++){
      |                    ~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 30