kuangbin專題十四-數論基礎-problem A(Bi-shoe and Phi-shoe )(簡單歐拉定理)

題目連接: https://vjudge.net/contest/219494#problem/A A - Bi-shoe and Phi-shoe Bamboo Pole-vault is a massively popular sport in Xzhiland. And Master Phi-shoe is a very popular coach for his success. He n
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