Submission #409470

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
409470	2021-05-20 20:15:38	ScarletS	Factories (JOI14_factories)	C++17	100 / 100	4921 ms	285876 KiB

factories

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#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int N = 5e5+4, lg = 20;
const ll INF = 1e18;
int pt[N], sub[N], up[lg][N], tin[N], tout[N], ct;
ll h[N], ans[N];
pair<int,ll> lift[N][lg];
vector<array<int,2>> e[N];
bitset<N> b;
bool isAncestor(int x, int y)
{
    return (tin[x]<=tin[y]&&tout[y]<=tout[x]);
}
int lca(int x, int y)
{
    if (isAncestor(x,y))
        return x;
    if (isAncestor(y,x))
        return y;
    for (int i=lg-1;i>=0;--i)
        if (!isAncestor(up[i][x],y))
            x=up[i][x];
    return up[0][x];
}
ll dist(int x, int y)
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 18 / 18
• Subtask 3: 67 / 67