Submission #1277083

#	Time	Username	Problem	Language	Result	Execution time	Memory
1277083		al95ireyiz	Permutation (APIO22_perm)	C++20	Compilation error	0 ms	0 KiB

perm

#pragma GCC optimize("O3", "fast-math", "unroll-loops", "no-stack-protector")
#include <bits/stdc++.h>
using namespace std;
#if !defined(ONLINE_JUDGE) and !defined(EVAL)
#include "template/debug.h"
#else
#define d(x...)
#endif
#define fr first
#define er erase
#define in insert
#define sc second
#define ll long long
#define pb push_back
#define vll vector<ll>
#define pll pair<ll,ll>
#define len(x) (ll) x.size()
#define all(x) x.begin(),x.end()
const ll INF = 1e9, INFL = 1e18;
const ll MOD = 1e9 + 7;
// const ll MOD = 998244353;
const ll maxn = 2e5 + 5;

ll n, m, k = 0;

std::vector<int> construct_permutation(long long _k)
{
    m = _k;
    ll cm = 0, say = 0;
    vector<int> cv, v;
    for(ll i = 1; i <= 60; i ++){
        if(m & (1LL << i)){
            for(auto &x : cv) x += i;
            for(ll j = 0; j < i; j ++) cv.pb(j);
            cm += i;
            say ++;
        }
    }
    for(ll i = cm; i > cm - say; i --){
        v.pb(i);
    }
    for(auto i : cv){
        v.pb(i);
    }
    return v;
}
void _() {
    ll q;
    cin >> q;
    auto v = construct_permutation(q);
    for(auto i : v) cout << i << ' ' ;
}
signed main() {
    ll tm = clock();
    cin.tie(0)->sync_with_stdio(0);
    ll t = 1;
    // cin >> t;
    for(ll tt = 1; tt <= t; tt ++) _();
    cerr << "\n\033[1;31mTime: \033[1;30m" \
        << (double)(clock()-tm)/1000000 << "\033[1;32m seconds\n";
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cc2TfNMd.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cccV41Ls.o:perm.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status