Submission #587201

#	Time	Username	Problem	Language	Result	Execution time	Memory
587201		stevancv	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	3 ms	488 KiB

messy

#include <bits/stdc++.h>
#include "messy.h"
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
string s;
void Add(int l, int r) {
    if (l == r) return;
    int mid = l + r >> 1;
    for (int i = l; i <= r; i++) s[i] = '1';
    for (int i = l; i <= mid; i++) {
        s[i] = '0';
        add_element(s);
        s[i] = '1';
    }
    for (int i = l; i <= r; i++) s[i] = '0';
    Add(l, mid);
    Add(mid + 1, r);
}
vector<int> ans;
void Solve(int l, int r, vector<int> v) {
    if (l == r) {ans[v[0]] = l; return;}
    vector<int> x, y;
    int mid = l + r >> 1;
    for (int i : v) s[i] = '1';
    for (int i : v) {
        s[i] = '0';
        if (check_element(s)) x.push_back(i);
        else y.push_back(i);
        s[i] = '1';
    }
    for (int i : v) s[i] = '0';
    Solve(l, mid, x);
    Solve(mid + 1, r, y);
}
vector<int> restore_permutation(int n, int w, int r) {
    for (int i = 0; i < n; i++) s += "0";
    Add(0, n - 1);
    compile_set();
    vector<int> v(n);
    iota(v.begin(), v.end(), 0);
    ans.resize(n);
    Solve(0, n - 1, v);
    return ans;
}

Compilation message (stderr)

messy.cpp: In function 'void Add(int, int)':
messy.cpp:13:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   13 |     int mid = l + r >> 1;
      |               ~~^~~
messy.cpp: In function 'void Solve(int, int, std::vector<int>)':
messy.cpp:28:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   28 |     int mid = l + r >> 1;
      |               ~~^~~

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