Submission #577159

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
577159	2022-06-14 08:06:26	Valters07	Inside information (BOI21_servers)	C++14	53 / 100	196 ms	32716 KiB

servers

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#include <bits/stdc++.h>
#pragma GCC optimize ("O2,unroll-loops")
#define fio ios_base::sync_with_stdio(0);cin.tie(0);
#define ll long long
#define en cin.close();return 0;
#define pb push_back
#define fi first//printf("%lli\n",cur);
#define se second//scanf("%lli",&n);
#define r0 return 0;
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int N = 120005;
const int LOG = log2(N)+2;
vector<pair<int,int> > g[N];
int par[N][LOG], tin[N], tout[N], tt;
int down[N], up[N], dep[N];
int topar[N];
void dfs(int u, int p)
{
    tin[u]=++tt;
    par[u][0]=p;
    for(int i = 1;i<LOG;i++)
        par[u][i]=par[par[u][i-1]][i-1];
    for(auto v:g[u])
    {
        if(v.fi!=p)
        {
            topar[v.fi]=v.se;
            down[v.fi]=(v.se>topar[u]||u==1?down[u]+1:1);
            up[v.fi]=(v.se<topar[u]||u==1?up[u]+1:1);
 
 
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• Subtask 1: 2.5 / 2.5
• Subtask 2: 0.5 / 2.5
• Subtask 3: 2.5 / 2.5
• Subtask 4: 0.5 / 2.5
• Subtask 5: 5 / 5
• Subtask 6: 0.5 / 5
• Subtask 7: 10 / 10
• Subtask 8: 0.5 / 10
• Subtask 9: 12.5 / 12.5
• Subtask 10: 0.5 / 12.5
• Subtask 11: 17.5 / 17.5
• Subtask 12: 0.5 / 17.5