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제출 #114554

#제출 시각아이디문제언어결과실행 시간메모리
114554SpeedOfMagicCoins (IOI17_coins)C++17
100 / 100
13 ms1676 KiB
#include "coins.h" std::vector<int> coin_flips(std::vector<int> b, int c) { int x = 0; for (int i = 0; i < 64; i++) x ^= b[i] * i; return {x^c}; } int find_coin(std::vector<int> b) { int r = 0; for (int i = 0; i < 64; i++) r ^= b[i] * i; return r; }
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