Submission #223638

#	Time	Username	Problem	Language	Result	Execution time	Memory
223638		Haunted_Cpp	Drvca (COCI19_drvca)	C++17	Compilation error	0 ms	0 KiB

drvca

#include <iostream>
#include <cstring>
#include <algorithm>
 
#pragma GCC optimize ("Ofast")
#pragma GCC target("fma,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#pragma GCC optimize("unroll-loops")
 
using namespace std;

const int N = 2e3;

int a [N];
bool vis [N];

int main () {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;

  for (int i = 0; i < n; i++) cin >> a[i];
  sort (a, a + n);
  
  for (int i = 0; i < n; i++) {
    vector<int> up = {a[0]}, down;
    if (i) up.emplace_back(a[i]);
    const int diff = a[i] - a[0];
    int nxt = a[i] + (a[i] - a[0]);
    for (int j = 1; j < n; j++) {
      if (j == i) continue;
      if (a[j] == nxt) {
        up.emplace_back(a[j]);
        nxt += diff;
      } else {
        down.emplace_back(a[j]);
      }
    }
    
   
    if ((int) down.size() <= 1) {
      while ((int) down.size() == 0) {
        int l = up.back ();
        up.pop_back ();
        down.emplace_back(l);
      }
      cout << (int) up.size() << '\n';
      for (auto to : up) cout << to << ' ';
      cout << '\n';
      cout << (int) down.size() << '\n';
      for (auto to : down) cout << to << ' ';
      cout << '\n';
      return 0;
    }
    
    const int d = down[1] - down[0];
    for (int j = 1; j < (int) down.size(); j++) {
      if (down[j] - down[j - 1] != d) {
        goto fim;
      }
    }
    
    cout << (int) up.size() << '\n';
    for (auto to : up) cout << to << ' ';
    cout << '\n';
    cout << (int) down.size() << '\n';
    for (auto to : down) cout << to << ' ';
    cout << '\n';
    return 0;
    
    fim:;    
  }
  cout << -1 << '\n';
  return 0;
}

Compilation message (stderr)

drvca.cpp: In function 'int main()':
drvca.cpp:26:5: error: 'vector' was not declared in this scope
     vector<int> up = {a[0]}, down;
     ^~~~~~
drvca.cpp:26:5: note: suggested alternative: 'perror'
     vector<int> up = {a[0]}, down;
     ^~~~~~
     perror
drvca.cpp:26:12: error: expected primary-expression before 'int'
     vector<int> up = {a[0]}, down;
            ^~~
drvca.cpp:26:28: error: expected primary-expression before ',' token
     vector<int> up = {a[0]}, down;
                            ^
drvca.cpp:26:30: error: 'down' was not declared in this scope
     vector<int> up = {a[0]}, down;
                              ^~~~
drvca.cpp:27:12: error: 'up' was not declared in this scope
     if (i) up.emplace_back(a[i]);
            ^~
drvca.cpp:33:9: error: 'up' was not declared in this scope
         up.emplace_back(a[j]);
         ^~
drvca.cpp:43:17: error: 'up' was not declared in this scope
         int l = up.back ();
                 ^~
drvca.cpp:47:21: error: 'up' was not declared in this scope
       cout << (int) up.size() << '\n';
                     ^~
drvca.cpp:48:22: error: unable to deduce 'auto&&' from 'up'
       for (auto to : up) cout << to << ' ';
                      ^~
drvca.cpp:51:22: error: unable to deduce 'auto&&' from 'down'
       for (auto to : down) cout << to << ' ';
                      ^~~~
drvca.cpp:63:19: error: 'up' was not declared in this scope
     cout << (int) up.size() << '\n';
                   ^~
drvca.cpp:64:20: error: unable to deduce 'auto&&' from 'up'
     for (auto to : up) cout << to << ' ';
                    ^~
drvca.cpp:67:20: error: unable to deduce 'auto&&' from 'down'
     for (auto to : down) cout << to << ' ';
                    ^~~~