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- #include <stdio.h>
- #include <string.h>
- #include <math.h>
- #include <stdlib.h>
- #include <stack>
- #include <queue>
- #include <set>
- #include <map>
- #include <string>
- #include <algorithm>
- #include <iostream>
- using namespace std;
- int p, n, a[10000];
- vector<int> ans;
- int main() {
- //freopen("input.txt", "r", stdin);
- //freopen("output.txt", "w", stdout);
- scanf("%d", &p);
- for (int tst = 1; tst <= p; tst++) {
- ans.clear();
- scanf("%*d%d", &n);
- for (int i = 0; i < n; i++) {
- scanf("%d", &a[i]);
- if (i % 2 == 0) {
- nth_element(a, a + i / 2, a + i + 1);
- ans.push_back(a[i / 2]);
- }
- }
- printf("%d %d", tst, ans.size());
- for (int i = 0; i < ans.size(); i++)
- printf("%c%d", i % 10 ? ' ' : '\n', ans[i]);
- printf("\n");
- }
- return 0;
- }
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