#import pdb; pdb.set_trace()
import sys
import math

def main():
    
    (n, k) = map(int, raw_input().split())
    d = map(int, raw_input().split())
    
    count = 0
    j = 0
    while j < n:
        tmpd = d[j]
        if tmpd - 1 != j:
            tmpe = d[tmpd - 1]
            d[tmpd - 1] = tmpd
            d[j] = tmpe
            
            count += 1
        else:
            j += 1
    
    if k > count:
        if (k - count) % 2 == 0:
            print "YES"
        else:
            print "NO"
    elif k == count:
        print "YES"
    else:
        print "NO"
        
        
if __name__ == '__main__':
    main()