Submission #709066

#	Time	Username	Problem	Language	Result	Execution time	Memory
709066		mansur	Abracadabra (CEOI22_abracadabra)	C++17	10 / 100	252 ms	524288 KiB

Main

//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")

#include<bits/stdc++.h>	

using namespace std;

#define all(a) a.begin(), a.end()                                                   
#define rall(a) a.rbegin(), a.rend()                 
#define sz(a) (int)a.size()
#define pf push_front
#define pb push_back
#define vt vector
#define s second
#define f first
#define nl '\n'
 
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
     
vt<pii> rid = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
vt<pii> dir = {{-1, -1}, {-1, 1}, {1, -1}, {1, 1}};
 
const int N = 5e5, mod = 1e9 + 7;

const ll inf = 1e18;
 
double eps = 1e-15;

bool flg = 0;

int p[N], n, q;

void slv() {
	cin >> n >> q;
	for (int i = 1; i <= n; i++) cin >> p[i];
	int ans[n + 1][n + 1];
	for (int i = 1; i <= n; i++) ans[0][i] = p[i];
	for (int t = 1; t <= n; t++) {
		vt<int> s, h;
		for (int i = 1; i <= n / 2; i++) s.pb(ans[t - 1][i]);
		for (int i = n / 2 + 1; i <= n; i++) h.pb(ans[t - 1][i]);
		vt<int> z;
		int i = 0, j = 0;
		while (i < sz(s) || j < sz(h)) {
			if (j == sz(h) || (i < sz(s) && s[i] < h[j])) z.pb(s[i++]);
			else z.pb(h[j++]);
		}
		for (i = 1; i <= n; i++) ans[t][i] = z[i - 1];
	}
	while (q--) {
	  	int t, k;
	  	cin >> t >> k;
	  	t = min(t, n);
	  	cout << ans[t][k] << nl;
	}
}              
 
main() {
	//freopen("shops.in", "r", stdin);                                                                                     
	//freopen("shops.out", "w", stdout);                                                                                     
	ios_base::sync_with_stdio(0);	                                                                                       
	cin.tie(0);
	int tp = 1;
	if (flg) cin >> tp;
	while (tp--) {  	
		slv();
	}
}                                               

Compilation message (stderr)

Main.cpp:62:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   62 | main() {
      | ^~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25