给你 x,y,kx, y, kx,y,k 三个正整数,每次可以选择以下操作之一:
三个正整数 1≤x,y,k≤1091 \leq x, y, k \leq 10^91≤x,y,k≤109
一行一个正整数,表示最小操作次数
10 4 2
2
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