Submission #1226334

#	Time	Username	Problem	Language	Result	Execution time	Memory
1226334		bynix	Coins (IOI17_coins)	C++20	100 / 100	5 ms	584 KiB

coins

#include "bits/stdc++.h"
#include "coins.h"
using namespace std;

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

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

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