Submission #782049

#	Time	Username	Problem	Language	Result	Execution time	Memory
782049		Dan4Life	Coins (IOI17_coins)	C++17	100 / 100	8 ms	1552 KiB

coins

#include "coins.h"
#include <vector>
using namespace std;
using vi = vector<int>;
vi coin_flips(vi b, int c){int x=0;for(int i=0;i<64;i++)x^=b[i]*i;return vi({c^x});}
int find_coin(vi a) {int x = 0;for(int i=0;i<64;i++)x^=a[i]*i;return x;}

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