What does this Zig snippet output?

1const std = @import("std");
2pub fn main() void {
3    const v: @Vector(4, i32) = .{ 1, 2, 3, 4 };
4    const w: @Vector(4, i32) = .{ 10, 20, 30, 40 };
5    const sum = v + w;
6    std.debug.print("{d}\n", .{sum[0]});
7    std.debug.print("{d}\n", .{sum[3]});
8}