#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int count=0;

int bubblesort(int x[ ], int n)
{
    int i, j, temp,c=0;

    for (i = 0; i < n - 1; i++) {
        for (j = n - 1; j > i; j--) {
            if (x[j - 1] > x[j]) {  
                temp = x[j];        
                x[j] = x[j - 1];
                x[j - 1]= temp;
		c++;
            }
        }	
    }
	//printf("%d",c);
	return c;
}

int selectsort(int num[ ], int n){
    int i, j, k, min, temp,c=0;

    for (i = 0; i < n - 1; i++) {
        min = num[i];                 
        k = i;                        
        for (j = i + 1; j < n; j++) {
            if (num[j] < min) {       
                min = num[j];         
                k = j;                
            }
        }                             
        temp = num[i];                
        num[i] = num[k];
        num[k] = temp;
        c++;
    }
	//printf("%d",c);
	return c;
}

void Swap(int x[ ], int i, int j)
{
    int temp;

    temp = x[i];
    x[i] = x[j];
    x[j] = temp;
}


void quicksort(int x[ ], int left, int right)
{
    int i, j;
    int pivot;


    i = left;                      
    j = right;                     

    pivot = x[(left + right) / 2]; 

    while (1) {                    

        while (x[i] < pivot)       
            i++;                   

        while (pivot < x[j])       
            j--;                   
        if (i >= j)                
            break;                 

        Swap(x, i, j); 
	count++;            
        i++;                       
        j--;
    }              

    if (left < i - 1)              
        quicksort(x, left, i - 1);   
    if (j + 1 <  right)           
        quicksort(x, j + 1, right);   
}

int main(){
	int i,N,K,ary[200000],cp[200000],ans,flag=0;
	scanf("%d",&N);
	scanf("%d",&K);
	
	//printf("%d",N);
	//printf("%d",K);

	for(i=0;i<N;i++){
		scanf("%d",&ary[i]);
	}

	memcpy(cp,ary,sizeof(int)*N);
	quicksort(cp,0,N-1);
	/*for(i=0;i<N;i++){
		printf("%d ",cp[i]);
	}*/
	if(count<=K){
		if((K-count)%2==0) flag=1;
		else if((K-count)%2==1) flag=0;
	}else{
		flag =2;
	}
	

	if(flag==0) printf("NO\n");
	else if(flag==1) printf("YES\n");
	else if(flag==2) printf("NO\n");
	return 0;
}