Submission #894857

#	Time	Username	Problem	Language	Result	Execution time	Memory
894857		Sir_Ahmed_Imran	Keys (IOI21_keys)	C++17	37 / 100	3032 ms	40788 KiB

keys

                              ///~~~LOTA~~~///
#include "keys.h"
#include <bits/stdc++.h>
using namespace std;
#define nl '\n'
#define ff first
#define ss second
#define ll long long 
#define append push_back
#define pii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define N 300001
int t[N];
int z[N];
int vis[N];
vector<int> k[N];
vector<pii> a[N];
int dfs(int v){
    if(vis[v]) return 0;
    vis[v]=t[z[v]]=1;
    int x=1;
    for(auto& i:k[z[v]])
        x+=dfs(i);
    k[z[v]].clear();
    for(auto& i:a[v]){
        if(t[i.ss]) x+=dfs(i.ff);
        else k[i.ss].append(i.ff);
    }
    return x;
} 
vector<int> find_reachable(vector<int> r,vector<int> u,vector<int> v,vector<int> c){
    int n,m;
    n=r.size();
    m=v.size();
    for(int i=0;i<n;i++)
        z[i]=r[i];
    for(int i=0;i<m;i++){
        a[u[i]].append({v[i],c[i]});
        a[v[i]].append({u[i],c[i]});
    }
    vector<int> x,y;
    for(int i=0;i<n;i++){
        x.append(dfs(i));
        y.append(1);
        for(int j=0;j<n;j++){
            vis[j]=t[j]=0;
            k[j].clear();
        }
    }
    for(int i=0;i<n;i++)
        for(int j=0;j<n;j++)
            if(x[j]<x[i]) y[i]=0;
    return y;
}

• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 17 / 17
• Subtask 4: 0 / 30
• Subtask 5: 0 / 33