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impl Solution {
pub fn count_good_prefixes_fn(a: Vec<u64>) -> usize {
let mut sum: u64 = 0;
let mut max_val: u64 = 0;
let mut count: usize = 0;
let mut i: usize = 0;
while i < a.len() {
let ai = a[i];
sum = sum + ai;
if ai > max_val {
max_val = ai;
}
if 2 * max_val == sum {
count = count + 1;
}
i = i + 1;
}
count
}
}