Submission #980629

#	Time	Username	Problem	Language	Result	Execution time	Memory
980629		Nexus	Permutation (APIO22_perm)	C++17	Compilation error	0 ms	0 KiB

perm

#include <bits/stdc++.h>
#define ll long long

using namespace std;

const ll N=1e6+9,M=2e18+9,mod=1e9+7;

ll a[66],q,k,x,y,z;
vector<int>v;

ll po(ll X,ll Y)
{
	if(!Y)return 1;
	if(Y&1)return X*po(X,Y-1);
	ll ret=po(X,Y/2);
	return ret*ret;
}

ll log2(ll k)
{
	ll g=0;
	while(k>1)k/=2,++g;
	return g;
}

vector<int>construct_permutation(ll k)
{
    x=log2(k);
    v.clear();
    y=x-1;
    k-=po(2,x);
    for(ll i=62;i>=0;--i)
    {
        if(k>=po(2,i))k-=po(2,i),a[i]=1,++y;else a[i]=0;
    }
    for(ll i=0;i<x;++i)
    {
        if(a[i])v.push_back(y),--y;
        v.push_back(i);
    }
    return v;
}


int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);

    cin>>q;
    while(q--)
    {
        cin>>k;
        vector<int>g=construct_permutation(k);
        for(auto i:g)cout<<i<<' ';
        cout<<'\n';
    }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cccEEcJj.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccsyaGXi.o:perm.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status