제출 #169604

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
169604		apostoldaniel854	Xoractive (IZhO19_xoractive)	C++14	컴파일 에러	0 ms	0 KiB

Xoractive

#include <bits/stdc++.h>
#include <interactive.h>
using namespace std;
vector <int> a;
int n;

typedef long long ll;
#define pb push_back
#define dbg(x) cerr << #x << " " << x << "\n"

vector <int> guess (int n) {
    int lst = ask (n);
    dbg (n);
    map <int, int> nr;
    for (int bit = 0; bit < 7; bit++) {
        vector <int> q;
        for (int i = 1; i < n; i++) {
            if (i & (1 << bit))
                q.pb (i);
        }

        auto x = get_pairwise_xor (q);
        q.pb (n);
        auto y = get_pairwise_xor (q);
        map <int, int> mp;
        for (auto it : x)
            mp[it]--;
        for (auto it : y)
            mp[it]++;
        for (auto it : mp)
            if (it.first && it.second)
                nr[it.first ^ lst] |= (1 << bit);
    }
    vector <int> ans (n);
    for (auto it : nr)
        ans[it.second - 1] = it.first;
    ans[n - 1] = lst;
    return ans;
}

int main() {
    cin >> n;
    for (int i = 0; i < n; i++)
        cin >> x, a.pb (x);
    auto ans = guess (n);
    for (auto it : ans)
        cout << it << "\n";
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Xoractive.cpp: In function 'int main()':
Xoractive.cpp:44:16: error: 'x' was not declared in this scope
         cin >> x, a.pb (x);
                ^