Submission #941890

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
941890	2024-03-09 16:10:19	LonlyR	Hard route (IZhO17_road)	C++17	100 / 100	734 ms	229892 KiB

road

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#include<bits/stdc++.h>
#define int long long
#define ii pair<int,int>
#define ff first
#define ss second
using namespace std;
const int maxn = 5e5 + 5;
int n;
ii res, dp[maxn];
vector<int> adj[maxn];
inline ii upd(ii a, int x, int y)
{
    if (a.ff < x)
        a = {x, y};
    else if (a.ff == x)
        a.ss += y;
    return a;
}
void dfs(int x = 1, int p = 1)
{
    dp[x].ss = 1;
    for (int i : adj[x]) if (i != p)
    {
        dfs(i, x);
        dp[x] = upd(dp[x], dp[i].ff + 1, dp[i].ss);
    }
}
 
 
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• Subtask 1: 19 / 19
• Subtask 2: 33 / 33
• Subtask 3: 48 / 48