def balancedSums(arr):    
    n = len(arr)
    start_index = 0
    left_sum = 0
    right_sum = sum(arr[start_index+1:])
    
    for i in range(start_index, n):
        if i != 0:
            left_sum += arr[i-1]
            right_sum -= arr[i]
            
        if left_sum == right_sum:
            return "YES"
    
    return "NO"