Submission #65319

#	Time	Username	Problem	Language	Result	Execution time	Memory
65319		zubec	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	4 ms	512 KiB

messy

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

#include "messy.h"

vector <int> ansvec;

int n, cnt;

void solve(int l, int r){
    string s;
    if (l == r)
        return;
    for (int i = 0; i < n; i++){
        s += '1';
    }
    for (int i = l-1; i < r; i++){
        s[i] = '0';
    }
    int mid = (l+r)>>1;
    for (int i = l-1; i < mid; i++){
        s[i] = '1';
        add_element(s);
        s[i] = '0';
    }
    solve(l, mid);
    solve(mid+1, r);
}

void solve2(vector <int> vec){
    string s;
    if (vec.size() == 1){
        ansvec[vec[0]] = cnt++;
        return;
    }
    for (int i = 0; i < n; i++){
        s += '1';
    }
    for (int i = 0; i < vec.size(); i++){
        s[vec[i]] = '0';
    }
    vector <int> vec1, vec2;
    for (int i = 0; i < vec.size(); i++){
        s[vec[i]] = '1';
        if (check_element(s)){
            vec1.push_back(vec[i]);
        } else
            vec2.push_back(vec[i]);
        s[vec[i]] = '0';
    }
    solve2(vec1);
    solve2(vec2);
}

std::vector<int> restore_permutation(int n, int w, int r) {
    vector <int> poses;
    ::n = n;
    ansvec.resize(n);
    for (int i = 0; i < n; i++)
        poses.push_back(i);
    solve(1, n);
    compile_set();
    solve2(poses);
    return ansvec;


}

Compilation message (stderr)

messy.cpp: In function 'void solve2(std::vector<int>)':
messy.cpp:39:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < vec.size(); i++){
                     ~~^~~~~~~~~~~~
messy.cpp:43:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < vec.size(); i++){
                     ~~^~~~~~~~~~~~

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