```go
package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {
	in := bufio.NewReader(os.Stdin)
	var t int
	fmt.Fscan(in, &t)
	for i := 0; i < t; i++ {
		var k, x, a int64
		fmt.Fscan(in, &k, &x, &a)
		if a*(k-1) > k*x {
			fmt.Println("YES")
		} else {
			fmt.Println("NO")
		}
	}
}
```