Submission #301478

#	Time	Username	Problem	Language	Result	Execution time	Memory
301478		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;
std::mt19937 rng((int) std::chrono::steady_clock::now().time_since_epoch().count());
int n_;
vector<int> ans;
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.push_back('1');
        else c.push_back('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(caras.begin(), caras.end(), i)) c.push_back('1');
        else c.push_back('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);
}
vector<int> restore_permutation(int n_, int w, int r){
    n = n_;
    ans.resize(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);
    return ans;
}

Compilation message (stderr)

messy.cpp: In function 'void solve(int, int, std::vector<int>)':
messy.cpp:29:24: error: 'n' was not declared in this scope
   29 |     for(int i = 0; i < n; i++){
      |                        ^
messy.cpp: In function 'std::vector<int> restore_permutation(int, int, int)':
messy.cpp:44:5: error: 'n' was not declared in this scope; did you mean 'n_'?
   44 |     n = n_;
      |     ^
      |     n_