Submission #121348

#	Time	Username	Problem	Language	Result	Execution time	Memory
121348		Charis02	Unscrambling a Messy Bug (IOI16_messy)	C++14	0 / 100	4 ms	384 KiB

messy

#include <vector>
#include <algorithm>
#include "messy.h"
#define rep(i,a,b) for(int i = a;i < b;i++)

using namespace std;

vector < int > result(230);

void init(int low,int high,int n)
{
    if(low == high)
        return;

    int mid = (low+high)/2;

    string s = "";

    rep(i,0,n)
        s += "1";

    rep(i,low,high+1)
        s[i] = '0';

    rep(i,low,mid+1)
    {
        s[i] = '1';

        add_element(s);

        s[i] = '0';
    }

    init(low,mid,n);
    init(mid+1,high,n);

    return;
}

void solve(int low,int high,int n,vector < int > pos,string s)
{
    if(low == high)
    {
        result[low] = pos[0];
        return;
    }

    int mid = (low+high)/2;
    string aristera = s;
    string deksia = s;
    vector < int > posl;
    vector < int > posr;

    rep(i,0,n)
    {
        aristera[i] = deksia[i] = '1';
    }

    rep(i,0,pos.size())
    {
        aristera[pos[i]] = deksia[pos[i]] = '0';
    }

    rep(i,0,pos.size())
    {
        int x = pos[i];
        s[x] = '1';
        if(check_element(s))
        {
            aristera[x] = '1';
            posl.push_back(x);
        }
        else
        {
            deksia[x] = '1';
            posr.push_back(x);
        }
    }

    solve(low,mid,n,posl,aristera);
    solve(mid+1,high,n,posr,deksia);

    return;
}

std::vector<int> restore_permutation(int n, int w, int r) {
    string s = "";

    init(0,n-1,0);

    compile_set();

    vector < int > v;

    rep(i,0,n)
    {
        v.push_back(i);
        s += "0";
    }

    solve(0,n-1,n,v,s);
}

Compilation message (stderr)

messy.cpp: In function 'void solve(int, int, int, std::vector<int>, std::__cxx11::string)':
messy.cpp:4:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(int i = a;i < b;i++)
messy.cpp:59:9:
     rep(i,0,pos.size())
         ~~~~~~~~~~~~~~              
messy.cpp:59:5: note: in expansion of macro 'rep'
     rep(i,0,pos.size())
     ^~~
messy.cpp:4:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(int i = a;i < b;i++)
messy.cpp:64:9:
     rep(i,0,pos.size())
         ~~~~~~~~~~~~~~              
messy.cpp:64:5: note: in expansion of macro 'rep'
     rep(i,0,pos.size())
     ^~~
messy.cpp: In function 'std::vector<int> restore_permutation(int, int, int)':
messy.cpp:102:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^

• Subtask 1: 0 / 20
• Subtask 2: 0 / 18
• Subtask 3: 0 / 11
• Subtask 4: 0 / 21
• Subtask 5: 0 / 30