Submission #1034471

#	Time	Username	Problem	Language	Result	Execution time	Memory
1034471		Blagoj	Minerals (JOI19_minerals)	C++17	100 / 100	39 ms	4144 KiB

minerals

#include <bits/stdc++.h>
#include "minerals.h"

using namespace std;

int val;

bool get(int x) {
	int otherVal = Query(x);
	swap(val, otherVal);
	return val != otherVal;
}

void solve(vector<int> l, vector<int> r, int t) {
	int sz = l.size();
	if (sz == 1) {
		Answer(l[0], r[0]);
		return;
	}
	vector<int> l1, l2, r1, r2;
	int mid = (int) (sz * (0.36));
	for (int i = 0; i <= mid; i++) {
		get(l[i]);
		l1.push_back(l[i]);
	}
	for (int i = mid + 1; i < sz; i++) r1.push_back(l[i]);
	for (int i = 0; i < sz; i++) {
		if (l1.size() == l2.size()) r2.push_back(r[i]);
		else if (r1.size() == r2.size()) l2.push_back(r[i]);
		else if (get(r[i]) == t) l2.push_back(r[i]);
		else r2.push_back(r[i]);
	}
	solve(l1, l2, !t);
	solve(r1, r2, t);
}

void Solve(int N) {
    vector<int> l, r;
    for (int i = 1; i <= 2 * N; i++) {
		if (get(i)) l.push_back(i);
		else r.push_back(i);
    }
	solve(l, r, 1);
}

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 30 / 30
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 5 / 5
• Subtask 8: 5 / 5
• Subtask 9: 10 / 10