Submission #963193

#	Time	Username	Problem	Language	Result	Execution time	Memory
963193		PoPularPlusPlus	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	860 KiB

messy

#include <bits/stdc++.h>
#include "messy.h"
 
using namespace std;
#define pb(x) push_back(x)
 
vector<int> ans;
int n;
 
void put(int l , int r){
	if(l == r - 1)return;
	int m = (l + r)/2;
	string s = "";
	for(int i = 0; i < n; i++){
		s += '1';
	}
	for(int i = l; i < r; i++){
		s[i] = '0';
	}
	for(int i = l; i < m; i++){
		s[i] = '1';
		//cout << s << '\n';
		add_element(s);
		s[i] = '0';
	}
	add_element(s);
	put(l , m);
	put(m , r);
}
 
void solve(vector<int>& v , int l , int r){
	//cout << l << ' ' << r << ' ' << v.size() << endl;
	if(l == r - 1){
		ans[v[0]] = l;
		return;
	}
	int m = (l + r)/2;
	string s = "";
	for(int i = 0; i < n; i++)s += '1';
  	//for(int i = l; i < r; i++)s[i] = '0';
	for(int i = 0; i < v.size(); i++){
		s[v[i]] = '0';
	}
	vector<int> a , b;
	for(int i = 0; i < v.size(); i++){
		s[v[i]] = '1';
		//cout << s << ' ' << check_element(s) << '\n';
		if(check_element(s)){
			//cout << v[i] << ' ';
			a.pb(v[i]);
		}
		else b.pb(v[i]);
		s[v[i]] = '0';
	}
	//cout << '\n';
	//assert(a.size() == b.size());
	solve(a , l , m);
	solve(b,m,r);
}
 
vector<int> restore_permutation(int nn, int w, int r){
	n = nn;
	ans.resize(n);
	put(0 , n);
    compile_set();
    vector<int> cur;
    for(int i = 0; i < n; i++){
    	cur.pb(i);
    }
    solve(cur , 0 , n);
    //cout << "came" << endl;
    /*for(int i = 0; i < n; i++){
    	cout << ans[i] << endl;
    }*/
    return ans;
}

Compilation message (stderr)

messy.cpp: In function 'void solve(std::vector<int>&, int, int)':
messy.cpp:41:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |  for(int i = 0; i < v.size(); i++){
      |                 ~~^~~~~~~~~~
messy.cpp:45:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |  for(int i = 0; i < v.size(); i++){
      |                 ~~^~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 11 / 11
• Subtask 4: 21 / 21
• Subtask 5: 30 / 30