Submission #1130583

#	Time	Username	Problem	Language	Result	Execution time	Memory
1130583		dombly	Xoractive (IZhO19_xoractive)	C++20	100 / 100	4 ms	508 KiB

Xoractive

#include <bits/stdc++.h>
#include "interactive.h"
#define pb push_back
#define F first
#define S second
using namespace std;

vector<int> guess(int n) {
	int kec = ask(1);
	map<int,int>rez;
	for(int bit = 0; bit < 7; bit++) {
        vector<int>v1;
        for(int i = 2; i <= n; i++) if((1 << bit) & i) v1.pb(i);
        if(v1.empty()) break;
        vector<int>v2 = v1;
        v2.pb(1);
        vector<int>r1 = get_pairwise_xor(v1);
        vector<int>r2 = get_pairwise_xor(v2);
        map<int,int>m;
        for(int j : r2) m[j] += 1;
        for(int j : r1) m[j] -= 1;
        m[0] -= 1;
        for(auto X : m) {
            if(X.S > 0) {
                rez[X.F ^ kec] += 1 << bit;
            }
        }
	}
	vector<int>ans(n);
	ans[0] = kec;
	for(auto X : rez) ans[X.S - 1] = X.F;
	return ans;
}

• Subtask 1: 6 / 6
• Subtask 2: 94 / 94