Submission #1131147

#	Time	Username	Problem	Language	Result	Execution time	Memory
1131147		Tsagana	Xoractive (IZhO19_xoractive)	C++20	Compilation error	0 ms	0 KiB

Xoractive

#include<bits/stdc++.h>

#define all(x) x.begin(), x.end()
#define int long long
#define pq priority_queue
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define pp pop_back
#define F first
#define S second

using namespace std;

vector<int> guess (int n) {
	vector<int> a(n);
	a[0] = ask(1);
	map<int, int> ans;
	for (int i = 0; (1 << i) <= n; i++) {
		vector<int> p;
		for (int j = 2; j <= n; j++) if (j & (1 << i)) p.pb(j);
		auto g1 = get_pairwise_xor(p); p.pb(1);
		auto g2 = get_pairwise_xor(p);

		map<int, int> mp;
		for (auto x: g2) mp[x]++;
		for (auto x: g1) mp[x]--;
		for (auto x: mp) if (x.S) ans[x.F ^ a[0]] |= (1 << i);
	}
	for (auto x: ans) a[x.S - 1] = x.F;
	return a;
}

Compilation message (stderr)

Xoractive.cpp: In function 'std::vector<long long int> guess(long long int)':
Xoractive.cpp:18:16: error: 'ask' was not declared in this scope
   18 |         a[0] = ask(1);
      |                ^~~
Xoractive.cpp:23:27: error: 'get_pairwise_xor' was not declared in this scope
   23 |                 auto g1 = get_pairwise_xor(p); p.pb(1);
      |                           ^~~~~~~~~~~~~~~~