Submission #52427

#	Time	Username	Problem	Language	Result	Execution time	Memory
52427		polyfish	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	3 ms	512 KiB

messy

//I love armpit fetish
#include "messy.h"

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

#define debug(x) cerr << #x << " = " << x << '\n';
#define BP() cerr << "OK!\n";
#define PR(A, n) cerr << #A << " = "; for (int _=1; _<=n; ++_) cerr << A[_] << ' '; cerr << '\n';
#define PR0(A, n) cerr << #A << " = "; for (int _=0; _<n; ++_) cerr << A[_] << ' '; cerr << '\n';
#define FILE_NAME ""

void add(int l, int r, int n) {
    if (l==r)
        return;
    string s;
    for (int i=0; i<n; ++i)
        s += '0';
    int mid = (l+r)/2;
    for (int i=l; i<=r; ++i)
        s[i] = '1';
    for (int i=l; i<=mid; ++i) {
        s[i] = '0';
        //cerr << s << '\n';
        add_element(s);
        s[i] = '1';
    }
    add(l, mid, n);
    add(mid+1, r, n);
}

void Find(int l, int r, int n, vector<int> p, vector<int> &res) {
    if (l==r) {
        res[p[0]] = l;
        return;
    }
    string s;
    vector<int> p1, p2;
    for (int i=0; i<n; ++i)
        s += '0';
    for (int i=0; i<p.size(); ++i)
        s[p[i]] = '1';
    for (int i=0; i<p.size(); ++i) {
        //cerr << p[i] << '\n';
        s[p[i]] = '0';
        //cerr << s << '\n';
        if (check_element(s))
            p1.push_back(p[i]);
        else
            p2.push_back(p[i]);
        s[p[i]] = '1';
    }
    int mid = (l + r) / 2;
    Find(l, mid, n, p1, res);
    Find(mid+1, r, n, p2, res);
}

vector<int> restore_permutation(int n, int w, int r) {
    add(0, n-1, n);
    compile_set();
    vector<int> p, res(n);
    for (int i=0; i<n; ++i)
        p.push_back(i);
    Find(0, n-1, n, p, res);
    return res;
}

Compilation message (stderr)

messy.cpp: In function 'void Find(int, int, int, std::vector<int>, std::vector<int>&)':
messy.cpp:41:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0; i<p.size(); ++i)
                   ~^~~~~~~~~
messy.cpp:43:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0; i<p.size(); ++i) {
                   ~^~~~~~~~~

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