Submission #475580

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
475580	2021-09-23T04:40:05 Z	ismoilov	Xoractive (IZhO19_xoractive)	C++14	Compilation error	0 ms	0 KB

Xoractive

#include<bits/stdc++.h>
#include "interactive.h"
using namespace std;

vector<int> guess(int n)
{
	if(n <= 14){
		vector <int> ans;
		for(int i = 1; i <= n; i ++)
			int x = ask(i), ans.push_back(x);
		return ans;
	}
	
	
	int a = ask(1);
	map <int, int> s;
	for(int i = 0; i < 7; i ++){
		vector <int> x;
		for(int j = 1; j < n; j ++)
			if(j >> i & 1)
				x.push_back(j+1);
		vector <int> c = get_pairwise_xor(x);
		c.push_back(1);
		vector <int> c1 = get_pairwise_xor(x);
		map <int, int> g;
		for(int j : c)
			g[j] --;
		for(int j : c1)
			g[j] ++;
		for(auto it : g)
			if(it.second > 0)
				s[it.first^a] += (1<<i);
	}
	vector <int> ans(n);
	ans[0] = a;
	for(auto it : s)
		ans[it.second] = it.first;
	return ans;
}

Compilation message

Xoractive.cpp: In function 'std::vector<int> guess(int)':
Xoractive.cpp:10:23: error: expected initializer before '.' token
   10 |    int x = ask(i), ans.push_back(x);
      |                       ^
Xoractive.cpp:10:8: warning: unused variable 'x' [-Wunused-variable]
   10 |    int x = ask(i), ans.push_back(x);
      |        ^