Submission #301473

#	Time	Username	Problem	Language	Result	Execution time	Memory
301473		matheo_apd	Unscrambling a Messy Bug (IOI16_messy)	C++17	Compilation error	0 ms	0 KiB

messy

#include <bits/stdc++.h>
#include "messy.h"
using namespace std;
#define all(x) begin(x), end(x)
#define pb push_back
#define maxn 130
int n_;
int ans[maxn];
void add(int l, int r){
    if(l == r) return;
    string c;
    for(int i = 0; i < n_; i++){
        if(l <= i and i <= r) c.pb('1');
        else c.pb('0');
    }
    int mid = (l+r)/2;
    for(int i = l; i <= mid; i++){
      c[i] = '0';
      add_element(c);
      c[i] = 1;
    }
    add(l, mid); add(mid+1, r);
}
void solve(int l, int r, vector<int> caras){
    if(l == r){
      ans[caras[0]] = l;
      return;
    }
    vector<int> L, R;
    string c;
    for(int i = 0; i < n_; i++){
        if(binary_search(all(caras), i)) c.pb('1');
        else c.pb('0');
    }
    for(auto i : caras){
        c[i] = '0';
        if(check_element(c)) L.push_back(i);
        else R.push_back(i);
        c[i] = '1';
    }
    int mid = (l+r)/2;
    solve(l, mid, L);
    solve(mid+1, r, R);
}
int[] restore_permutation(int n, int w, int r){
    n_ = n;
    add(0, n-1);
    compile_set();
    vector<int> caras;
    for(int i = 0; i < n; i++)
        caras.push_back(i);
    solve(0, n-1, caras);
    int resp[n];
    for(int i = 0; i < n; i++)
        resp[i] = ans[i];
    return resp;
}

Compilation message (stderr)

messy.cpp:45:4: error: structured binding declaration cannot have type 'int'
   45 | int[] restore_permutation(int n, int w, int r){
      |    ^~
messy.cpp:45:4: note: type must be cv-qualified 'auto' or reference to cv-qualified 'auto'
messy.cpp:45:4: error: empty structured binding declaration
messy.cpp:45:7: error: expected initializer before 'restore_permutation'
   45 | int[] restore_permutation(int n, int w, int r){
      |       ^~~~~~~~~~~~~~~~~~~