16 lines
158 B
Go
16 lines
158 B
Go
package main
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import "fmt"
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func main() {
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m := map[int]bool{1: true, 3: true, 5: true}
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var n int
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for range m {
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n++
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}
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fmt.Println(n)
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}
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// Output:
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// 3
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