def power(x,n):
    p=[]
    X=x
    if n==0:
        return 1
    if n==1:
        return x
    
    while n!=1:
        if n%2==0:
            n=n/2
            p.append(2)
        else:
            n=n-1
            p.append(1)
            
    l=len(p)
    for i in range(l):
        if p[(l-1)-i]==2:
            X=X**2
        else:
            X*=x
        if X>N:
            X=X%N
        
    return X%N
    
num=list(map(int,input().split()))
a=list(map(int,input().split()))
N=1000003
total=0

for i in range(num[1]):
    total+=power(num[0],a[i])

print(total%N)