What ever your programme demonstrates!
You show the effect of no work for the first week and its impact, and then the effect of partial impact the second week and its impact. The overall effect on planned Completion will be what it will be - which could actually be no effect (if critical path runs through off site procurement) or five weeks effect as you had a closure planned for week 1 which now can't be booked until week 5 and/or it is pushing more work into winter working.
You show the effect of no work for the first week and its impact, and then the effect of partial impact the second week and its impact. The overall effect on planned Completion will be what it will be - which could actually be no effect (if critical path runs through off site procurement) or five weeks effect as you had a closure planned for week 1 which now can't be booked until week 5 and/or it is pushing more work into winter working.