Submission #445593

#	Time	Username	Problem	Language	Result	Execution time	Memory
445593		FEDIKUS	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	460 KiB

messy

#include <bits/stdc++.h>

#include "messy.h"

using namespace std;

typedef string str;

void dodaj(int n,int l,int r){
    if(l==r) return;
    str s;
    for(int i=0;i<n;i++){
        if(l<=i && i<=r) s+='0';
        else s+='1';
    }
    int mid=l+(r-l)/2;
    for(int i=l;i<=mid;i++){
        s[i]='1';
        add_element(s);
        s[i]='0';
    }
    dodaj(n,l,mid);
    dodaj(n,mid+1,r);
}

vector<int> spoji(vector<int> a,vector<int> b){
    for(int i=0;i<b.size();i++) a.push_back(b[i]);
    return a;
}

vector<int> resi(int n,int l,int r,vector<int> &gde){
    if(l==r) return gde;
    vector<int> gde1;
    vector<int> gde2;
    str s;
    for(int i=0;i<n;i++){
        if(binary_search(gde.begin(),gde.end(),i)) s+='0';
        else s+='1';
    }
    for(int i:gde){
        s[i]='1';
        if(check_element(s)) gde1.push_back(i);
        else gde2.push_back(i);
        s[i]='0';
    }
    int mid=l+(r-l)/2;
    return spoji(resi(n,l,mid,gde1),resi(n,mid+1,r,gde2));
}

vector<int> shiftuj(vector<int> a){
    vector<int> ret(a.size());
    for(int i=0;i<a.size();i++){
        ret[a[i]]=i;
    }
    return ret;
}

std::vector<int> restore_permutation(int n, int w, int r) {
    dodaj(n,0,n-1);
    compile_set();
    vector<int> gde;
    for(int i=0;i<n;i++) gde.push_back(i);
    return shiftuj(resi(n,0,n-1,gde));
}
/*
4 16 16
2 1 3 0
*/

Compilation message (stderr)

messy.cpp: In function 'std::vector<int> spoji(std::vector<int>, std::vector<int>)':
messy.cpp:27:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i=0;i<b.size();i++) a.push_back(b[i]);
      |                 ~^~~~~~~~~
messy.cpp: In function 'std::vector<int> shiftuj(std::vector<int>)':
messy.cpp:52:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |     for(int i=0;i<a.size();i++){
      |                 ~^~~~~~~~~

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