Submission #492513

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
492513	2021-12-07 16:35:30	LittleCube	Star Trek (CEOI20_startrek)	C++14	45 / 100	122 ms	14268 KiB

startrek

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#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;
const ll MOD = 1000000007;
ll N, D, dp[100005][2], pre[100005], ans = 1;
vector<int> E[100005];
void dfs(int k)
{
    for (int i : E[k])
        if (i != pre[k])
        {
            pre[i] = k;
            dfs(i);
            if (dp[i][0] == 0 && dp[k][0] == 0)
                dp[k][0] = i;
            else if (dp[i][0] == 0)
                dp[k][1] = i;
        }
}
void reroot(int k)
{
    for (int i : E[k])
 
 
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• Subtask 1: 0 / 0
• Subtask 2: 7 / 7
• Subtask 3: 8 / 8
• Subtask 4: 15 / 15
• Subtask 5: 15 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 15