Submission #993942

#	Time	Username	Problem	Language	Result	Execution time	Memory
993942		Lib	Magic Show (APIO24_show)	C++17	0 / 100	0 ms	344 KiB

Alice

#include <bits/stdc++.h>
#include "Alice.h"
using namespace std;
int toggled[500];
int perm1[10000];
int perm2[10000];
int perm3[10000];
long long x;
long long len=4801;
set <int> rem;
vector <pair<int,int> > TVector;
vector <vector<int> > inGroup;
vector <pair<int,int> > TVector2;
vector <int> nums;
/*
long long setN(int n){
	return 177013;
}*/
vector<pair <int,int>> Alice(){
	setN(x);
	x^=463222221001217544;
	int toggledcnt=0;
	inGroup.clear();
	TVector.clear();
	for(int i=1;i<=200;i++){
		inGroup.push_back(nums);
	}
	for(int i=0;i<=60;i++){
		if(x >> i & 1){
			toggled[i]=1;
			toggledcnt++;
		}
	}
	for(int i=1;i<=4801;i++){
		perm1[i]=-1;
		rem.insert(i);
		inGroup[(i-1)/34].push_back(i);
	}
	//initialize the 1st perm;
	for(int i=0;i<=60;i++){
		if(toggled[i]){
			for(int k=1;k<=17;k++){
				perm1[i*17+k]=i;
			}
			for(int k=1;k<=34;k++){
				rem.erase(i*34+k);
			}
		}
	}
	srand(123190);
	for(int i=1;i<=len-1-toggledcnt*17;i++){
		swap(perm1[i],perm1[rand()%(len-i-toggledcnt*17)+i]);
	}
	for(int i=1;i<=len-toggledcnt*17;i++){
		//cout<<perm1[i]<<" ";
	}
	int cur=1,cur2=1,cur3=1;
	for(int i=1;i<=4801;i++){
		if(rem.count(i)){
			perm3[cur]=i;
			cur++;
		}
	}
	int ta,tb;
	for(int i=0;i<=60;i++){
		for(int k=1;k<=500;k++){
			ta=rand()%34;
			tb=rand()%34;
			swap(inGroup[i][ta],inGroup[i][tb]);
		}
		for(int k=0;k<34;k++){
		//	cout<<inGroup[i][k]<<" ";
		}
	}
	cur--;
	for(int i=1;i<cur;i++){
		swap(perm3[i],perm3[rand()%(cur-i)+i+1]);
	}
	cur=1;
	for(int i=1;i<=len-toggledcnt*17;i++){
		if(perm1[i]>-1){
			perm2[cur]=inGroup[perm1[i]].back();
			inGroup[perm1[i]].pop_back();
			perm2[cur+1]=inGroup[perm1[i]].back();
			inGroup[perm1[i]].pop_back();
			cur+=2;
		}else{
			perm2[cur]=perm3[cur2];
			cur2++;
			cur++;
		}
	}
	for(int i=1;i<=4800;i++){
	//	cout<<perm2[i]<<" ";
		TVector.push_back({perm2[i],perm2[i+1]});
	}
	return TVector;
}
/*
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	TVector2=Alice();
	for(int i=0;i<4800;i++){
	//	cout<<TVector2[i].first<<" "<<TVector2[i].second<<"\n";
	}
}
*/

Bob

#include <bits/stdc++.h>
#include "Bob.h"
using namespace std;
int toggled[500];
long long Bob(vector <pair<int,int> > adj){
	long long xorhash=463222221001217544,ta,tb,ans;
	for(int i=0;i<adj.size();i++){
	ta=adj[i].first/34;
	tb=adj[i].first/34;
	if(ta==tb&&ta<=60){
		toggled[ta]=1;
	}
	}
	ans=0;
	for(int i=0;i<=60;i++){
		ans|=1ll << i;
	}
	ans^=xorhash;
	return ans;
}

Compilation message (stderr)

Alice.cpp: In function 'std::vector<std::pair<int, int> > Alice()':
Alice.cpp:57:19: warning: unused variable 'cur3' [-Wunused-variable]
   57 |  int cur=1,cur2=1,cur3=1;
      |                   ^~~~

Bob.cpp: In function 'long long int Bob(std::vector<std::pair<int, int> >)':
Bob.cpp:7:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |  for(int i=0;i<adj.size();i++){
      |              ~^~~~~~~~~~~

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