Submission #641140

#	Time	Username	Problem	Language	Result	Execution time	Memory
641140		moday_morning	Xor Sort (eJOI20_xorsort)	C++17	0 / 100	1 ms	308 KiB

xorsort

#include <bits/stdc++.h>
#define int long long
using namespace std;
vector <int> a(1005);

signed main() {
    int n, s;
    cin >> n >> s;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
    }
    queue <pair <int, int>> q;
    for (int i = 1; i < n; i++) {
        if (a[i] >= a[i+1]) {
            int check = a[i] ^ a[i+1];
            if (check < a[i]) {
                a[i] = check;
                q.push({i, i+1});
            }
            else {
                a[i+1] = check;
                q.push({i+1, i});
            }
        }
        else if (a[i] <= a[i-1]) {
            a[i] ^= a[i-1];
            q.push({i, i-1});
        }
    }
    cout << q.size() << "\n";
    while (!q.empty()) {
        cout << q.front().first << " " << q.front().second << "\n";
        q.pop();
    }
}

• Subtask 1: 0 / 25
• Subtask 2: 0 / 35
• Subtask 3: 0 / 40