Submission #1295384

#	Time	Username	Problem	Language	Result	Execution time	Memory
1295384		lucaskojima	Coins (IOI17_coins)	C++17	100 / 100	6 ms	768 KiB

coins

#include "bits/stdc++.h"
#include "coins.h"
#define sz(x) (int)size(x)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)

using namespace std;
using ll = long long;
using pii = pair<int, int>;

const char nl = '\n';
const int INF = 0x3f3f3f3f;
const ll LINF = 0x3f3f3f3f3f3f3f3f;

vector<int> coin_flips(vector<int> a, int c) {
  int xor_sum = c;
  for (int i = 0; i < 64; i++)
    if (a[i] == 1)
      xor_sum ^= i;

  vector<int> res = {xor_sum};
  return res;
}

int find_coin(vector<int> a) {
  int res = 0;
  for (int i = 0; i < 64; i++)
    if (a[i] == 1)
      res ^= i;

  return res;
}

Compilation message (stderr)

grader.cpp: In function 'void shuffle(std::vector<int>&)':
grader.cpp:88:23: warning: 'void std::random_shuffle(_RAIter, _RAIter) [with _RAIter = __gnu_cxx::__normal_iterator<int*, vector<int> >]' is deprecated: use 'std::shuffle' instead [-Wdeprecated-declarations]
   88 |         random_shuffle(v.begin(), v.end());
      |         ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/13/algorithm:61,
                 from grader.cpp:5:
/usr/include/c++/13/bits/stl_algo.h:4581:5: note: declared here
 4581 |     random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 15 / 15
• Subtask 5: 50 / 50