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leetcode-rust's Issues

Too ugly, 4A watermelon

for &byte in &read_buffer {
if byte == b'\r' || byte == b'\n' {
break;
}
num = num * 10 + byte - b'0';
}

can simply done by

// optimal, in-place trim 
read_buffer.truncate(read_buffer.trim_end().len());

// less optimal, extra allocation
read_buffer= read_buffer.trim().parse().unwrap();

Example submissions:
https://codeforces.com/contest/4/submission/118260875
https://codeforces.com/contest/4/submission/118261880

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