Submission #1235276

#	Time	Username	Problem	Language	Result	Execution time	Memory
1235276		clemmy14	Spring cleaning (CEOI20_cleaning)	C++20	9 / 100	132 ms	6200 KiB

cleaning

#include<bits/stdc++.h>
using namespace std;

vector<vector<int>> adj;

signed main() {
    int n, q; cin >> n >> q;
    adj = vector<vector<int>>(n+1);
    for(int i=1; i<n; i++) {
        int a, b; cin >> a >> b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    while(q--) {
        int d; cin >> d;
        vector<int> v;
        for(int i=0; i<d; i++) {
            int a; cin >> a;
            v.push_back(a);
        }
        if(v.size()%2 == 1) cout << "-1\n";
        else {
            sort(v.begin(), v.end());
            int ans=n-1;
            for(int i=1; i<v.size(); i+=2) {
                ans+=(v[i]-v[i-1]+2);
            }
            cout << ans << '\n';
        }
    }
    return 0;
}

• Subtask 1: 0 / 0
• Subtask 2: 0 / 9
• Subtask 3: 9 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 17
• Subtask 7: 0 / 30