Submission #500881

#	Time	Username	Problem	Language	Result	Execution time	Memory
500881		aryan12	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	2 ms	460 KiB

messy

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

vector<int> ans(129);

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

void Output(int l, int r, int n, vector<int> possible) {
    if(l == r) {
        ans[possible[0]] = l;
        return;
    }
    string s = "";
    for(int i = 0; i < n; i++) {
        s += "1";
    }
    for(int i = 0; i < possible.size(); i++) {
        s[possible[i]] = '0';
    }
    int mid = (l + r) / 2;
    vector<int> left, right;
    for(int i = 0; i < possible.size(); i++) {
        s[possible[i]] = '1';
        if(check_element(s)) {
            left.push_back(possible[i]);
        }
        else {
            right.push_back(possible[i]);
        }
        s[possible[i]] = '0';
    }
    /*cout << "L = " << l << ", R = " << r << "\n";
    cout << "left:\n";
    for(int i = 0; i < left.size(); i++) {
        cout << left[i] << " ";
    }
    cout << "\nright:\n";
    for(int i = 0; i < right.size(); i++) {
        cout << right[i] << " ";
    }
    cout << "\n";*/
    Output(l, mid, n, left);
    Output(mid + 1, r, n, right);
}

vector<int> restore_permutation(int n, int w, int r) {
    Input(0, n - 1, n);
    ans.resize(n);
    compile_set();
    vector<int> possible;
    for(int i = 0; i < n; i++) {
        possible.push_back(i);
    }
    Output(0, n - 1, n, possible);
    return ans;
}

Compilation message (stderr)

messy.cpp: In function 'void Output(int, int, int, std::vector<int>)':
messy.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for(int i = 0; i < possible.size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
messy.cpp:42:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     for(int i = 0; i < possible.size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~

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