Submission #417330

#	Time	Username	Problem	Language	Result	Execution time	Memory
417330		errorgorn	Ancient Machine (JOI21_ancient_machine)	C++17	5 / 100	84 ms	9420 KiB

Anna

#include "Anna.h"

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ii pair<ll,ll>
#define fi first
#define se second
#define endl '\n'

#define puf push_front
#define pof pop_front
#define pub push_back
#define pob pop_back
#define lb lower_bound
#define ub upper_bound

#define rep(x,s,e) for (auto x=s-(s>e);x!=e-(s>e);(s<e?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int) (x).size()

namespace {
	int n;
	string s;
	const string ss[]={"?X","?Y","?Z","XY","YX","YZ","ZX","ZY"};
}
//XZ is useless just make it Z?

void Anna(int N, std::vector<char> S) {
	n=N;
	rep(x,0,n) s+=S[x];
	
	if (n%2==1) s+=s.back(),n++;
	
	for (int x=0;x<n;x+=2){
		if (s[x]==s[x+1]) s[x]='?';
		string sub=s.substr(x,2);
		if (sub=="XZ") sub="?Z";
		
		rep(bm,0,8) if (sub==ss[bm]){
			//cout<<"bitmask: "<<bm<<endl;
			int curr=4;
			rep(y,0,3){
				if (bm&curr) Send(1);
				else Send(0);
				curr>>=1;
			}
		}
	}
}

Bruno

#include "Bruno.h"

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ii pair<ll,ll>
#define fi first
#define se second
#define endl '\n'

#define puf push_front
#define pof pop_front
#define pub push_back
#define pob pop_back
#define lb lower_bound
#define ub upper_bound

#define rep(x,s,e) for (auto x=s-(s>e);x!=e-(s>e);(s<e?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int) (x).size()

namespace {
	int n,l;
	vector<int> bits;
	string s;
	
	const string ss[]={"?X","?Y","?Z","XY","YX","YZ","ZX","ZY"};
}  // namespace

void Bruno(int N, int L, std::vector<int> A) {
	n=N,l=L,bits=A;
	
	//for (auto &it:bits) cout<<it<<" "; cout<<endl;
	
	rep(x,0,l/3){
		int num=4*bits[x*3]+2*bits[x*3+1]+bits[x*3+2];
		//cout<<"received: "<<num<<endl;
		s+=ss[num];
	}
	
	if (n%2==1) s.erase(s.begin()+n-1);
	//cout<<s<<endl;
	
	vector<int> stk;
	
	rep(x,0,n){
		if (s[x]=='X'){
			if (sz(stk)%2==0) stk.pub(x);
			else Remove(x);
		}
		else if (s[x]=='Y'){
			if (sz(stk)%2==1) stk.pub(x);
			else Remove(x);
		}
		else if (s[x]=='Z'){
			while (sz(stk)>1){
				Remove(stk.back());
				stk.pob();
			}
			Remove(x);
		}
		else{
			Remove(x);
		}
	}
	
	while (!stk.empty()){
		Remove(stk.back());
		stk.pob();
	}
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95