#include <stdio.h>

void main(void){
    int l = 0;
    scanf("%d\n",&l);
    int n = 0;
    scanf("%d\n",&n);
    char list[10] = "a";
    for(int i = 0; i < n ; i++){
        scanf("%s",list);
    }
    int count = 1;
    for(int i = 0 ; i < l-3 ; i++){
        count *= 2;
    }
    printf("%d",count*n);
}