Submission #334667

#	Time	Username	Problem	Language	Result	Execution time	Memory
334667		Hegdahl	Coins (IOI17_coins)	C++17	100 / 100	14 ms	1764 KiB

coins

#include "coins.h"

std::vector<int> coin_flips(std::vector<int> b, int c) {
    for (int i = 0; i < 64; ++i)
      if (b[i]) c ^= i;
    return {c};
}

int find_coin(std::vector<int> b) {
  int c = 0;
  for (int i = 0; i < 64; ++i)
    if (b[i]) c ^= i;
  return c;
}

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