Submission #697171

#	Time	Username	Problem	Language	Result	Execution time	Memory
697171		amunduzbaev	Park (JOI17_park)	C++17	10 / 100	28 ms	420 KiB

park

#include "park.h"
#include "bits/stdc++.h"
using namespace std;
#ifndef EVAL
#include "grader.cpp"
#endif

mt19937 rng(chrono :: steady_clock :: now().time_since_epoch().count());

static int used[1400];
void Detect(int t, int n){
	auto ask = [&](int a, int b, vector<int> t){
		for(auto x : t) used[x] = 1;
		if(a > b) swap(a, b);
		int ans = Ask(a, b, used);
		for(auto x : t) used[x] = 0;
		return ans;
	};
	
	auto Ans = [&](int i, int j){
		if(i > j) swap(i, j);
		Answer(i, j);
	};
	
	vector<int> p(n);
	iota(p.begin(), p.end(), 0);
	shuffle(p.begin(), p.end(), rng);
	for(int i=0;i<n;i++){
		for(int j=0;j<i;j++){
			if(ask(p[i], p[j], {p[i], p[j]})){
				Ans(p[i], p[j]);
			}
		}
	}
	return;
}


/*

1
6
7
0 1
0 3
1 2
1 4
2 4
2 5
3 4

*/

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 27
• Subtask 4: 0 / 30
• Subtask 5: 0 / 23