Submission #714352

#	Time	Username	Problem	Language	Result	Execution time	Memory
714352		Huseyn123	Art Collections (BOI22_art)	C++17	20 / 100	132 ms	556 KiB

art

#include "art.h"
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
typedef long long ll;
struct dsu{
    vector<ll> e;
    void init(int n){
        e.resize(n+1,-1);
    }
    int get(int x){
        if(e[x]<0){
            return x;
        }
        else{
            return e[x]=get(e[x]);
        }
    }
    int size(int x){
        return -e[get(x)];
    }
    bool same_set(int x,int y){
        return (get(x)==get(y));
    }
    bool unite(int x,int y){
        x=get(x);
        y=get(y);
        if(x==y){
            return false;
        }
        if(e[x]>e[y]){
            swap(x,y);
        }
        e[x]+=e[y];
        e[y]=x;
        return true;
    }
};
vector<vector<ll>> g;
vector<ll> used;
vector<ll> indegree;
void dfs(ll v){
    used[v]=1;
    for(auto x:g[v]){
        if(used[x]==0){
            dfs(x);
        }
    }
}
void solve(int N){
    g.resize(N+1);
    indegree.resize(N+1,0);
    vector<int> a;
    for(int i=1;i<=N;i++){
        for(int j=i+1;j<=N;j++){
            used.clear();
            used.resize(N+1,0);
            dfs(i);
            if(used[j]){
                continue;
            }
            used.clear();
            used.resize(N+1,0);
            dfs(j);
            if(used[i]){
                continue;
            }
            a.pb(i);
            a.pb(j);
            for(int z=1;z<=N;z++){
                if(z!=i && z!=j){
                    a.pb(z);
                }
            }
            ll res1=publish(a);
            swap(a[0],a[1]);
            ll res2=publish(a);
            if(res1<res2){
                g[j].pb(i);
                indegree[i]++;
            }
            else{
                g[i].pb(j);
                indegree[j]++;
            }
            a.clear();
        }
    }
    queue<ll> q;
    for(int i=1;i<=N;i++){
        if(indegree[i]==0){
            q.push(i);
        }
    }
    while(!q.empty()){
        ll v=q.front();
        a.pb(v);
        q.pop();
        for(auto x:g[v]){
            indegree[x]--;
            if(indegree[x]==0){
                q.push(x);
            }
        }
    }
    reverse(a.begin(),a.end());
    answer(a);
}

Compilation message (stderr)

interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30