For problem statement at 0-999/500-599/530-539/537/problemA.txt this is a correct solution, but verifier at 0-999/500-599/530-539/537/verifierA.go ends with All tests passed can you fix the verifier? package main

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

func main() {
	in := bufio.NewReader(os.Stdin)
	var s string
	fmt.Fscan(in, &s)

	t := "CODEFORCES"
	n := len(s)

	for k := 0; k <= len(t); k++ {
		if n >= len(t) && s[:k] == t[:k] && s[n-(len(t)-k):] == t[k:] {
			fmt.Println("YES")
			return
		}
	}
	fmt.Println("NO")
}