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// @Title: 排列硬币 (Arranging Coins)
// @Author: 15816537946@163.com
// @Date: 2021-10-10 23:56:28
// @Runtime: 8 ms
// @Memory: 2.2 MB
func arrangeCoins(n int) int {

    try := 1
    for n>= try {
        n-=try
        try++
    }
    return try-1

}