fn main() {
    1 + 1 - 1 * 1 / 1 % 1 | 1 & 1 ! 1 ^ 1 >> 1 << 1;
    let mut a = 0;
    a += 1;
    a -= 1;
    a *= 1;
    a /= 1;
    a %= 1;
    a |= 1;
    a &= 1;
    a ^= 1;
    a >>= 1;
    a <<= 1;
}