fn start_main() -> i64 {
    var xs: list[i64] = [1, 2];
    append(xs, 3);
    if (length(xs) != 3) { return 1; }
    var نسخة: list[i64] = xs;
    نسخة[0] = 9;
    if (xs[0] != 1) { return 2; }
    if (نسخة[0] != 9) { return 3; }
    append(xs, xs[0]);
    if (length(xs) != 4) { return 4; }
    if (xs[3] != 1) { return 5; }
    var nested: list[list[i64]] = [[1], [2]];
    let nested_copy: list[list[i64]] = nested;
    nested[0][0] = 7;
    if (nested_copy[0][0] != 1) { return 6; }
    if (nested[0][0] != 7) { return 7; }
    var grown: list[i64] = [];
    var k = 0;
    while (k < 32) { append(grown, k * 2); k = k + 1; }
    if (length(grown) != 32) { return 8; }
    if (grown[31] != 62) { return 9; }
    grown[0] = grown[31];
    if (grown[0] != 62) { return 10; }
    print("32");
    return 0;
}