Submission #782065

#	Time	Username	Problem	Language	Result	Execution time	Memory
782065		Dan4Life	Coins (IOI17_coins)	C++17	100 / 100	7 ms	1396 KiB

coins

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