Submission #71456

#	Time	Username	Problem	Language	Result	Execution time	Memory
71456		RezwanArefin01	Unscrambling a Messy Bug (IOI16_messy)	C++17	100 / 100	4 ms	640 KiB

messy

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

int n; 
vector<int> p; 

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

void solve(int l, int r, vector<int> v) {
    if(l == r) {
        p[v[0]] = l; 
        return;
    } int m = l + r >> 1; 
    string base(n, '1'); 
    vector<int> L, R; 
    for(int i : v) base[i] = '0';
    for(int i : v) {
        string s = base; 
        s[i] = '1'; 
        if(check_element(s)) 
            L.push_back(i); 
        else R.push_back(i); 
    } 
    solve(l, m, L); 
    solve(m + 1, r, R); 
}
vector<int> restore_permutation(int N, int w, int r) {
    n = N; 
    add(0, n - 1); 
    compile_set(); 
    vector<int> v; 
    for(int i = 0; i < n; i++) 
        v.push_back(i); 
    p = vector<int>(n, 0); 
    solve(0, n - 1, v); 
    return p; 
}

Compilation message (stderr)

messy.cpp: In function 'void add(int, int)':
messy.cpp:11:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m = l + r >> 1; 
             ~~^~~
messy.cpp: In function 'void solve(int, int, std::vector<int>)':
messy.cpp:24:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     } int m = l + r >> 1; 
               ~~^~~

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