Submission #868191

#	Time	Username	Problem	Language	Result	Execution time	Memory
868191		abczz	Mechanical Doll (IOI18_doll)	C++14	Compilation error	0 ms	0 KiB

doll

#include "doll.h"
#include <iostream>
#include <array>
#include <vector>
#define ll long long

using namespace std;

ll n, k, cnt;
bool X[400000];
vector <ll> C, X, Y;
ll solve(ll l, ll r) {
  ll id = cnt++, chl, chr, mid = (l+r)/2;
  X.push_back(-1);
  Y.push_back(-1);
  if (n < l) {
    X[id] = -(id+1);
    Y[id] = -1;
    return id;
  }
  else if (l == r) return 0;
  X[id] = solve(l, mid);
  Y[id] = solve(mid+1, r);
  return id;
}

void get(ll x) {
  x *= -1;
  if (!B[x]) {
    B[x] ^= 1;
    if (X[x] != 0) get(X[x]);
    else {
      X[x] = k;
      return;
    }
  }
  else {
    B[x] ^= 1;
    if (Y[x] != 0) get(Y[x]);
    else {
      Y[x] = k;
      return;
    }
  }
}
void create_circuit(int M, std::vector<int> A) {
  n = A.size() + 1;
  for (int i=0; i<=M; ++i) C.push_back(-1);
  for (int i=18; i>=0; --i) {
    if (n <= (1LL << i)) k = (1LL << i);
  }
  solve(1, k);
  for (int i=1; i<n; ++i) {
    k = i;
    get(-1);
  }
  k = 0;
  get(-1);
  answer(C, X, Y);
}

Compilation message (stderr)

doll.cpp:11:16: error: conflicting declaration 'std::vector<long long int> X'
   11 | vector <ll> C, X, Y;
      |                ^
doll.cpp:10:6: note: previous declaration as 'bool X [400000]'
   10 | bool X[400000];
      |      ^
doll.cpp: In function 'long long int solve(long long int, long long int)':
doll.cpp:14:5: error: request for member 'push_back' in 'X', which is of non-class type 'bool [400000]'
   14 |   X.push_back(-1);
      |     ^~~~~~~~~
doll.cpp:13:18: warning: unused variable 'chl' [-Wunused-variable]
   13 |   ll id = cnt++, chl, chr, mid = (l+r)/2;
      |                  ^~~
doll.cpp:13:23: warning: unused variable 'chr' [-Wunused-variable]
   13 |   ll id = cnt++, chl, chr, mid = (l+r)/2;
      |                       ^~~
doll.cpp: In function 'void get(long long int)':
doll.cpp:29:8: error: 'B' was not declared in this scope
   29 |   if (!B[x]) {
      |        ^
doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:59:10: error: could not convert 'C' from 'vector<long long int>' to 'vector<int>'
   59 |   answer(C, X, Y);
      |          ^
      |          |
      |          vector<long long int>