Submission #1165188

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1165188	2025-03-11 08:32:26	Warinchai	Dynamic Diameter (CEOI19_diameter)	C++20	100 / 100	265 ms	107772 KiB

diameter

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#include <bits/stdc++.h>
#define int long long
using namespace std;
vector<int> adj[800005];
int ar[800005];
int n, q, w;
struct path
{
    int l, d, mxpre, mxsuf;
    path(int x = 0)
    {
        l = d = mxpre = mxsuf = x;
    }
    friend path operator+(path &a, path &b)
    {
        path c;
        c.l = a.l + b.l;
        c.mxsuf = max(b.mxsuf, a.mxsuf + b.l);
        c.mxpre = max(a.mxpre, b.mxpre + a.l);
        c.d = max({a.d, b.d, a.mxsuf + b.mxpre});
        return c;
    }
} paths[1000005];
struct point
{
    int mx, d;
    point(int x = 0)
    {
        mx = d = x;
    }
 
 
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• Subtask 6: 27 / 27