Submission #1289894

#TimeUsernameProblemLanguageResultExecution timeMemory
1289894enzyICC (CEOI16_icc)C++20
90 / 100
79 ms628 KiB
#include"icc.h"
#include <bits/stdc++.h>
using namespace std;
mt19937 rng(time(0));
const int maxn=110;
const int maxk=7;
vector<int>v[maxn];
int pai[maxn];
int faz_query(int x, int y, vector<int>a, vector<int>b){
    int A[x], B[y];
    for(int i=0;i<x;i++) A[i]=a[i];
    for(int i=0;i<y;i++) B[i]=b[i];
    return query(x,y,A,B);
}
int find(vector<int> a, vector<int> b){
    int id=0;
    for(int k=0;k<maxk;k++){
        vector<int>aux;
        for(int j=0;j<a.size();j++) if(j&(1<<k)) aux.push_back(a[j]);
        if(aux.size()&&faz_query(aux.size(),b.size(),aux,b)) id+=(1<<k);
    }
    return a[id];
}
void run(int n){
    for(int i=1;i<=n;i++) v[i].clear();
    for(int i=1;i<=n;i++) v[i].push_back(i);
    for(int i=1;i<n;i++){
        vector<int>a, b, aux;
        int at=__lg(n-i+1);
        for(int i=0;i<=at;i++) aux.push_back(i);
        shuffle(aux.begin(),aux.end(),rng);
        for(int z=0;z<=at;z++){
            int k=aux[z];
            a.clear(); b.clear();
            for(int j=1;j<=n-i+1;j++){
                if(j&(1<<k)) for(int x : v[j]) a.push_back(x);
                else for(int x : v[j]) b.push_back(x);
            }
            if(z==at) break;
            if(a.size()&&b.size()&&faz_query(a.size(),b.size(),a,b)) break;
        }
        int u=find(a,b), w=find(b,a), repu=0, repw=0;
        setRoad(u,w);
        for(int j=1;j<=n-i+1;j++){
            for(int x : v[j]){
                if(x==u&&repu) assert(false);
                if(x==w&&repw) assert(false);
                if(x==u) repu=j;
                if(x==w) repw=j;
            }
        }
        assert(repu&&repw);
        if(repu>repw) swap(repu,repw);
        for(int x : v[repw]) v[repu].push_back(x);
        v[repw].clear();
        for(int x : v[n-i+1]) v[repw].push_back(x);
        v[n-i+1].clear();
    }
}
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