bu-yong-jia-jian-cheng-chu-zuo-jia-fa-lcof.rs

#![allow(dead_code, unused, unused_variables, non_snake_case)]

fn main() {}

struct Solution;

impl Solution {
    pub fn add(a: i32, b: i32) -> i32 {
        let (mut a, mut b) = (a, b);
        while b != 0 {
            let c = a ^ b;
            b = (a & b) << 1;
            a = c;
        }
        a
    }
}