Submission #198339

#	Time	Username	Problem	Language	Result	Execution time	Memory
198339		stefdasca	Unscrambling a Messy Bug (IOI16_messy)	C++14	0 / 100	5 ms	2424 KiB

messy

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

int sz;
/*
int perm[202];
set<string> test, tru;

// to be removed when submitting
void add_element(string s)
{
    test.insert(s);
}

bool check_element(string s)
{
    if(tru.find(s) != tru.end())
        return 1;
    return 0;
}
void compile_set()
{
    string ans;
    for(int i = 0; i < sz; ++i)
        ans += '0';
    for(set<string> ::iterator it = test.begin(); it != test.end(); ++it)
    {
        string ss = *it;
        for(int i = 0; i < sz; ++i)
            ans[i] = '0';
        for(int i = 0; i < sz; ++i)
            ans[perm[i]] = ss[i];
        tru.insert(ans);
    }
}
*/
int poz[202];
vector<int> pospoz[202][202];
void build(int st, int dr)
{
    if(st == dr)
        return;
    string s;
    for(int i = 0; i < sz; ++i)
        s += '1';
    int mid = (st + dr) / 2;
    for(int i = st; i <= dr; ++i)
        s[i] = '0';
    for(int i = st; i <= mid; ++i)
    {
        s[i] = '1';
    //    cout << st << " " << dr << " " << s << '\n';
        if(s.size() != sz)
        {
            while(1);
            add_element(s);
        }
        s[i] = '0';
    }
    build(st, mid);
    build(mid+1, dr);
}
void restore(int st, int dr)
{
    if(st == dr)
    {
        poz[st] = pospoz[st][st][0];
        return;
    }
    string s;
    for(int i = 0; i < sz; ++i)
        s += '0';
    bool oki[150] = {0};
    for(int i = 0; i < pospoz[st][dr].size(); ++i)
        oki[pospoz[st][dr][i]] = 1;
    for(int i = 0; i < sz; ++i)
        if(!oki[i])
            s[i] = '1';
    int mid = (st + dr) / 2;
    for(int i = 0; i < pospoz[st][dr].size(); ++i)
    {
        int pp = pospoz[st][dr][i];
        s[pp] = '1';
        if(s.size() != sz)
            while(1);
        bool xxx = check_element(s);
        if(xxx)
            pospoz[st][mid].push_back(pp);
        else
            pospoz[mid+1][dr].push_back(pp);
        s[pp] = '0';
    }
    restore(st, mid);
    restore(mid+1, dr);
}
vector<int> restore_permutation(int n, int w, int r)
{
    sz = n;
    build(0, n-1);
    compile_set();
    for(int i = 0; i < n; ++i)
        pospoz[0][n-1].push_back(i);
    restore(0, n-1);
    vector<int> ans;
    for(int i = 0; i < n; ++i)
        ans.push_back(poz[i]);
    return ans;
}
/*
// to be removed when submitting
int main()
{
    int n, w, r;
    cin >> n >> w >> r;
    int seed;
    cin >> seed;
    for(int i = 0; i < n; ++i)
        perm[i] = i;
    for(int i = 0; i < seed; ++i)
        random_shuffle(perm, perm + n);
    for(int i = 0; i < n; ++i)
        cout << perm[i] << " ";
    cout << '\n';
    vector<int> ans = restore_permutation(n, w, r);
    for(int i = 0; i < n; ++i)
        cout << ans[i] << " ";
    return 0;
}
*/

Compilation message (stderr)

messy.cpp: In function 'void build(int, int)':
messy.cpp:54:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(s.size() != sz)
            ~~~~~~~~~^~~~~
messy.cpp: In function 'void restore(int, int)':
messy.cpp:75:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < pospoz[st][dr].size(); ++i)
                    ~~^~~~~~~~~~~~~~~~~~~~~~~
messy.cpp:81:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < pospoz[st][dr].size(); ++i)
                    ~~^~~~~~~~~~~~~~~~~~~~~~~
messy.cpp:85:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(s.size() != sz)
            ~~~~~~~~~^~~~~

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