Submission #523350

#	Time	Username	Problem	Language	Result	Execution time	Memory
523350		amunduzbaev	Ancient Machine (JOI21_ancient_machine)	C++17	0 / 100	25 ms	3928 KiB

Anna

#include "Anna.h"
#include "bits/stdc++.h"
using namespace std;

#define ar array

void Anna(int n, vector<char> s) {
	vector<int> res(n), pref(n), suff(n + 1);
	int c=0;
	for(int i=0;i<n;i++){
		if(i) pref[i] = pref[i-1];
		if(s[i] == 'Y' && c) pref[i]++, c = 0;
		if(s[i] == 'X') c++;
	}
	
	c=0;
	for(int i=n-1;~i;i--){
		suff[i] = suff[i+1];
		if(s[i] == 'Y' && c) suff[i]++;
		if(s[i] == 'Z') c++;
	}
	
	for(int i=0;i<n;i++){
		if(s[i] != 'Z') pref[i] = 0;
		if(s[i] != 'X') suff[i] = 0;
	}
	for(int i=0;i<n;i++){
		if(i) pref[i] = max(pref[i], pref[i-1]);
	} for(int i=n-1;~i;i--){
		suff[i] = max(suff[i], suff[i+1]);
	}
	
	ar<int, 2> r = {suff[0], 0};
	for(int i=0;i<n;i++){
		r = max(r, {pref[i] + suff[i+1], i + 1});
	}
	
	//~ for(int i=0;i<n;i++) cout<<pref[i]<<" ";
	//~ cout<<endl;
	//~ for(int i=0;i<n;i++) cout<<suff[i]<<" ";
	//~ cout<<endl;
	
	c=-1;
	for(int i=r[1]-1,is=0;~i;i--){
		if(!is && s[i] == 'Z') res[i] = 1, is = 1;
		if(is && s[i] == 'Y') c = i;
		if(is && s[i] == 'X' && ~c) res[i] = res[c] = 1, c = -1;
	}
	
	c=-1;
	for(int i=r[1],is=0;i<n;i++){
		if(!is && s[i] == 'X') res[i] = 1, is = 1;
		if(is && s[i] == 'Y') c = i;
		if(is && s[i] == 'Z' && ~c) res[i] = res[c] = 1, c = -1;
	}
	
	//~ cout<<r[1]<<endl;
	//~ for(int i=0;i<n;i++) cout<<res[i]<<" ";
	//~ cout<<endl;
	
	for(int j=0;j<20;j++) Send(r[1] >> j & 1);
	for(int i=0;i<n;i++) Send(res[i]);
}

Bruno

#include "Bruno.h"
#include "bits/stdc++.h"
using namespace std;

void Bruno(int n, int l, vector<int> a) {
	int x=0;
	for(int i=0;i<20;i++) x |= (a[i] << i);
	a.erase(a.begin(), a.begin() + 20);
	
	auto add = [&](int l, int r){
		for(int i=l;i<=r;i++) Remove(i);
	};
	
	vector<int> tot;
	for(int i=x-1;~i;i--){
		if(a[i]){
			tot.push_back(i);
		}
	}
	
	int lx = 0;
	if(!tot.empty()){
		for(int i=2;i<(int)tot.size();i+=2){
			add(tot[i-1] + 1, tot[i-2] - 1);
			add(tot[i] + 1, tot[i-1] - 1);
			Remove(tot[i-1]);
			Remove(tot[i]);
		} add(0, tot.back() - 1);
		lx = tot[0];
		tot.clear();
	}
	
	for(int i=x;i<n;i++){
		if(a[i]){
			tot.push_back(i);
		}
	}
	
	if(!tot.empty()){
		for(int i=2;i<(int)tot.size();i++){
			add(tot[i-2] + 1, tot[i-1] - 1);
			add(tot[i-1] + 1, tot[i] - 1);
			Remove(tot[i-1]);
			Remove(tot[i]);
		} add(tot.back() + 1, n - 1);
		add(lx, tot[0]);
	} else add(lx, n - 1);
}

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