Submission #1264515

#	Time	Username	Problem	Language	Result	Execution time	Memory
1264515		DeltaStruct	Coins (IOI17_coins)	C++20	100 / 100	8 ms	584 KiB

coins

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

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

int find_coin(vector<int> B){
  int r(0); for (int i(0);i < 64;++i) r ^= B[i]*i;
  return r;
}

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