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Codeforces1401 C. Mere Array
You are given an array 𝑎1,𝑎2,…,𝑎𝑛 where all 𝑎𝑖 are integers and greater than 0. In one operation, you can choose two different indices 𝑖 and 𝑗 (1≤𝑖,𝑗≤𝑛). If 𝑔𝑐𝑑(𝑎𝑖,𝑎𝑗) is equal to t
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