Submission #726753

#	Time	Username	Problem	Language	Result	Execution time	Memory
726753		vjudge1	Permutation (APIO22_perm)	C++17	100 / 100	2 ms	340 KiB

perm

#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx,avx2,fma,popcnt")
#include<bits/stdc++.h>
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
#define lastbit(i) __builtin_ctz(i)
vector<int> construct_permutation(long long k){
   if (k==1)return {};
   if (k==2)return {0};
   for(int pr:{2,3,5,7,11,13}){
    if (k%pr==0&&k>pr){
        vector<int>l=construct_permutation(k/pr);
        vector<int>r=construct_permutation(pr);
        for (auto &v:r){
            v+=l.size();
        }
        l.insert(l.end(),all(r));
        return l;
    }
   }
   auto temp=construct_permutation(k>>1);
   temp.pb(sz(temp));
   for (auto &v:temp)v++;
   temp.pb(0);
   return temp;
}
/*signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen(".INP","r",stdin);
    //freopen(".OUT","w",stdout);
    for1(i,2,100000){
    vector<int>vl=construct_permutation(i);
    vector<int>dp;
    dp.resize(sz(vl));
    long long ans=1;
    for1(j,0,sz(vl)-1){
    dp[j]=1;
    for1(k,0,j-1){
    if (vl[k]<vl[j]){
        dp[j]+=dp[k];
    }
    }
    ans+=dp[j];
    }
    if (ans!=i){
        cout<<"vcl "<<i<<" "<<ans<<'\n';
        for1(j,0,sz(vl)-1){
        cout<<vl[j]<<" ";
        }
        return 0;
    }
    }
}*/

• Subtask 1: 10 / 10
• Subtask 2: 90 / 90