Submission #1206437

#	Time	Username	Problem	Language	Result	Execution time	Memory
1206437		dosts	Machine (IOI24_machine)	C++20	10 / 100	3 ms	436 KiB

machine

#include "machine.h"
#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
//#define int long long
#define pii pair<int,int>
#define vi vector<int>
#define ff first
#define ss second
#define sp << " " <<
#define all(x) x.begin(),x.end()
#define big(x) ((int)(x.size()))
using namespace std;
const int MOD = 1e9+7, LIM = 1e6+1, inf = 2e9;

std::vector<int> find_permutation(int N) {
  if (N%2) {
    vi ask;
    for (int i = 0;i<N;i++) ask.push_back(i);
    vi A = use_machine(ask);
    int xr = 0;
    for (int i = 0;i<N;i++) xr^=i;
    for (int i = 0;i<N;i++) xr^=A[i];
    vi ans(N);
    for (int i = 0;i<N;i++) ans[i] = A[i]^xr;
    return ans;
  }

}

Compilation message (stderr)

machine.cpp: In function 'std::vector<int> find_permutation(int)':
machine.cpp:29:1: warning: control reaches end of non-void function [-Wreturn-type]
   29 | }
      | ^

• Subtask 0: 0 / 0
• Subtask 1: 0 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 19
• Subtask 4: 0 / 21
• Subtask 5: 10 / 10
• Subtask 6: 0 / 31