Submission #1046211

#	Time	Username	Problem	Language	Result	Execution time	Memory
1046211		Tob	Magic Show (APIO24_show)	C++17	0 / 100	3 ms	1844 KiB

Alice

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

#define F first
#define S second
#define all(x) x.begin(), x.end()
#define pb push_back
#define FIO ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)

using namespace std;

typedef long long ll;
typedef pair <int, int> pii;

const int B = 80, bit = 60, seed = 12345;

vector <pii> Alice() {
	int w = B*bit;
	ll x = setN(w+2);
	vector <pii> res;
	
	mt19937 rng(seed);
	
	vector <int> p;
	for (int i = 0; i < w; i++) p.pb(i/B);
	shuffle(all(p), rng);
	
	vector <int> q(w+2);
	for (int i = 0; i < w+2; i++) q[i] = i;
	shuffle(all(q), rng);
	res.pb({q[w]+1, q[w+1]+1});
	
	for (int i = 0; i < w; i++) {
		if (x & (1LL << p[i])) res.pb({q[i]+1, q[i+1]+1});
		else res.pb({q[i]+1, q[i+2]+1});
	}
	return res;
}

Bob

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

#define F first
#define S second
#define all(x) x.begin(), x.end()
#define pb push_back
#define FIO ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)

using namespace std;

typedef long long ll;
typedef pair <int, int> pii;

const int B = 80, bit = 60, seed = 12345;

ll Bob(vector <pii> v) {
	int w = B*bit;
	mt19937 rng(seed);
	
	vector <int> p;
	for (int i = 0; i < w; i++) p.pb(i/B);
	shuffle(all(p), rng);
	
	vector <int> q(w);
	for (int i = 0; i < w; i++) q[i] = i;
	shuffle(all(q), rng);
	
	map <pii, int> m;
	for (auto x : v) m[x] = 1;
	
	ll res = 0;
	for (int i = 0; i < w; i++) {
		if (m[{q[i]+1, q[i+1]+1}]) res |= (1LL << p[i]);
	}
	
	return res;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 30
• Subtask 3: 0 / 65