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Submission #365291

# Submission time Handle Problem Language Result Execution time Memory
365291 2021-02-11T11:39:44 Z Mlxa CONSUL (info1cup19_consul) C++14
100 / 100
 29 ms 380 KB 
#ifdef LC
#include "pch.h"
#else
#include <bits/stdc++.h>
#include "grader.h"
#endif
using namespace std;
#define all(x) x.begin(), x.end()
#define x first
#define y second
#define mp make_pair
#define mt make_tuple

int kth(int i);
int cnt(int x);
void say_answer(int a);

mt19937 rnd;

void solve(int n) {
	int q = 48;
	set<int> ind;
	set<int> was;
	while (q > 0 && (int)ind.size() < n) {
		int i = 1 + (int)(rnd() % n);
		while (ind.count(i)) {
			i = (int)(rnd() % n);
		}
		int v = kth(i);
		--q;
		if (was.count(v)) {
			continue;
		}
		int c = cnt(v);
		--q;
		if (3 * c > n) {
			say_answer(v);
			return;
		}
	}
	say_answer(-1);
}

#ifdef LC

const int N = 50;
map<int, int> cn;
int v[N];

int kth(int i) {
	return v[i];
}
int cnt(int x) {
	return cn[x];
}
void say_answer(int x) {
	cout << "answer " << x << endl;
}

signed main() {
	assert(freopen("input.txt", "r", stdin));
	ios::sync_with_stdio(0); cin.tie(0);
	for (int i = 0; i < N; ++i) {
		v[i] = i / (N / 3);
		++cn[v[i]];
	}
	// for (auto e : cn) {
	// 	cout << e.x << " " << e.y << endl;
	// }
	solve(N);
	return 0;
}

#endif

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 364 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 364 KB Output is correct
2 Correct 9 ms 364 KB Output is correct

Subtask #3
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 364 KB Output is correct
2 Correct 18 ms 364 KB Output is correct
3 Correct 9 ms 364 KB Output is correct
4 Correct 4 ms 380 KB Output is correct
5 Correct 20 ms 364 KB Output is correct
6 Correct 27 ms 364 KB Output is correct
7 Correct 17 ms 364 KB Output is correct
8 Correct 22 ms 364 KB Output is correct
9 Correct 27 ms 364 KB Output is correct
10 Correct 21 ms 364 KB Output is correct
11 Correct 17 ms 364 KB Output is correct
12 Correct 18 ms 364 KB Output is correct
13 Correct 29 ms 364 KB Output is correct
14 Correct 24 ms 364 KB Output is correct