Submission #1117720

#	Time	Username	Problem	Language	Result	Execution time	Memory
1117720		erering	Permutation (APIO22_perm)	C++17	0 / 100	1 ms	336 KiB

perm

#include <bits/stdc++.h>
#include "perm.h"
using namespace std;
#define endl '\n'
#define pb push_back
bool flag=1;
int a[300];
vector<int> construct_permutation(long long k)
{
    if(k>50)exit(1);
    long long cnt=1,f=0;
    for(long long i=62;i>=0;i--){
        if((k>>i)&1){
           // cout<<i<<' '<<(k>>i)<<' '<<k<<endl;
            if(cnt==1){
                for(int j=1;cnt<=i;j+=2){
                    a[j]=cnt++;
                    a[j]+=200;
                }
                f=2;
                continue;
            }
            else{
                a[f]=-1;
            }
            f+=2;
        }
    }
    vector<int> v;
    int s=1;
    for(int i=299;i>=0;i--){
        if(a[i]==-1)a[i]=s++;
    }
    for(int i=0;i<300;i++){
        if(a[i]!=0){
            if(a[i]>=200){
                a[i]=a[i]-200+s-1;
           //     cout<<a[i]<<'s'<<endl;
            }
            v.pb(a[i]-1);
        }
    }
    return v;

}
/*signed main()
{
    vector<int> v=construct_permutation(7);
    cout<<endl;
    for(auto i:v)cout<<i<<' ';

}*/

• Subtask 1: 0 / 10
• Subtask 2: 0 / 90