Submission #782083

#	Time	Username	Problem	Language	Result	Execution time	Memory
782083		Dan4Life	Coins (IOI17_coins)	C++17	100 / 100	9 ms	1380 KiB

coins

#include<vector>
using v=std::vector<int>;
#define F for(int i=0;i<64;i++)
v coin_flips(v b, int c){F c^=b[i]*i;return{c};}
int find_coin(v a){int x=0;F 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