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use io::{stdin,println,ReaderUtil};
fn count_nucleotides(dna: &str) -> (int, int, int, int) {
let mut (a, c, g, t) = (0, 0, 0, 0);
for str::each_char(dna) |ch| {
match ch {
'A' => a += 1,
'C' => c += 1,
'G' => g += 1,
'T' => t += 1,
_ => fail ~"Unexpected character found"
}
}
(a, c, g, t)
}
fn count_nucleotides_2(dna: &str) -> (int, int, int, int) {
do iter::foldl(&str::chars(dna), (0, 0, 0, 0)) |res, &ch| {
let (a, c, g, t) = *res;
match ch {
'A' => (a + 1, c, g, t),
'C' => (a, c + 1, g, t),
'G' => (a, c, g + 1, t),
'T' => (a, c, g, t + 1),
_ => fail ~"Unexpected character found"
}
}
}
fn main() {
let dna = stdin().read_line();
let (a, c, g, t) = count_nucleotides(dna);
/*let (a, c, g, t) = count_nucleotides_2(dna);*/
println(fmt!("%d %d %d %d", a, c, g, t));
}
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