Submission #370452

#	Time	Username	Problem	Language	Result	Execution time	Memory
370452		casperwang	Xoractive (IZhO19_xoractive)	C++14	Compilation error	0 ms	0 KiB

Xoractive

#include "interactive.h"
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
#define debug(args) kout("[ " + string(#args) + " ]", args)
void kout() { cerr << endl; }
template <class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ',kout(b...); }
template <class T> void pary(T L, T R) { while (L != R) cerr << *L << " \n"[++L==R]; }

vector<int> guess(int n) {
	vector <int> G;

  for (int i = 2; i <= n; i++)
    G.pb(i);
  vector <int> exp = get_pairwise_xor(G);
  G.pb(1);
  vector <int> all = get_pairwise_xor(G);

  vector <int> ans(n);
  set <int> nums;
  ans[0] = ask(1);
  for (int i = 0, j = 0; i < exp.size(); i++) {
    while (all[j] != exp[i])
      nums.insert(all[j++] ^ ans[0]);
  }
  while (j < all.size()) nums.insert(all[j++] ^ ans[0]);
  assert(nums.size() == n);

	return ans;
}

Compilation message (stderr)

Xoractive.cpp: In function 'std::vector<int> guess(int)':
Xoractive.cpp:22:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |   for (int i = 0, j = 0; i < exp.size(); i++) {
      |                          ~~^~~~~~~~~~~~
Xoractive.cpp:26:10: error: 'j' was not declared in this scope
   26 |   while (j < all.size()) nums.insert(all[j++] ^ ans[0]);
      |          ^
In file included from /usr/include/c++/9/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:33,
                 from Xoractive.cpp:2:
Xoractive.cpp:27:22: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   27 |   assert(nums.size() == n);
      |          ~~~~~~~~~~~~^~~~