Tune down to sound like the studio version. If you'd rather use a capo, do capo 4 and transpose it -5 or +7
The song follows the same chord progression as "Canon in D" by Johann Pachelbel, just like:
--Vitamin C's "Graduation"
--Bob Marley's "No Woman No Cry"
--Blues Traveler's "Hook"

Note: This is a simplied version of how Maroon 5 play it. 
The best version is Memories Acoustic or the official version.
----------------------------------------------------------------------------------------------------

[Intro]
C G
Am Em
F C
F G

[Chorus]
C                          G
Here's to the ones that we got
Am                       Em
Cheers to the wish you were here, but you're not
          F                         C            F                     G
'Cause the drinks bring back all the memories of everything we've been through
 C                     G
Toast to the ones here today
  Am                       Em
Toast to the ones that we lost on the way
           F                         C
'Cause the drinks bring back all the memories
         F                  G          N.C.
And the memories bring back memories, bring back you...


[Verse 1]
           C                  G         Am              Em
There's a time that I remember, when I did not know no pain
         F             C             F                     G
When I believed in forever, and everything would stay the same
       C                   G              Am             Em
Now my heart feel like December, when somebody say your name
          F                  C               F                G
'Cause I can't reach out to call you, but I know I will one day, ay


[Pre-Chorus]
C             G               Am                  Em
   Everybody hurts sometimes, everybody hurts someday, ay-ay
F                  C           F                         G
   Everything will be alright, go and raise a glass and say, hey


[Chorus]
C                          G
Here's to the ones that we got
Am                       Em
Cheers to the wish you were here, but you're not
           F                         C           F                     G
'Cause the drinks bring back all the memories of everything we've been through
 C                   G
Toast to the ones here today
  Am                       Em
Toast to the ones that we lost on the way
           F                         C
'Cause the drinks bring back all the memories
         F                  G          N.C.
And the memories bring back memories, bring back you...


[Break]
C      G                          Am
  Do do, do do do do, do,   do do do do
Em           F            C
Do do do, do   do do do do, do do do
F                   G
Memories bring back memories, bring back you...


[Verse 2]
           C             G             Am            Em
There's a time that I remember when I never felt so lost
       F                    C                F          G
When I felt all of the hatred, was too powerful to stop (Ooh yeah)
       C                   G               Am              Em
Now my heart feel like an ember, and it's lighting up the dark
        F                C                 F           G
I'll carry these torches for you, and you know I never drop, yeah


[Pre-Chorus]
C             G               Am                 Em
   Everybody hurts sometimes, everybody hurts someday, ay-ay
F                  C           F                     G
   Everything gon' be alright, go and raise a glass and say, hey

[Chorus]
C                          G
Here's to the ones that we got (oh)
Am                       Em
Cheers to the wish you were here, but you're not
          F                         C            F                     G
'Cause the drinks bring back all the memories of everything we've been through (no no)
 C                   G
Toast to ones here today
  Am                        Em
Toast to the ones that we lost on the way
           F                         C
'Cause the drinks bring back all the memories (ay)
         F                  G          N.C.
And the memories bring back memories, bring back you...


[Break]
C      G                          Am
  Do do, do do do do, do,   do do do do
Em           F            C
Do do do, do   do do do do, do do do
F                   G
Memories bring back memories, bring back you...
C      G                          Am
  Do do, do do do do, do,   do do do do
Em           F            C
Do do do, do   do do do do, do do do
F                   G
Memories bring back memories, bring back you...


[Outro]
C G
    Yeah yeah yeah
Am  Em
       Yeah yeah
F                   C
yeah, yeah, no, no
F                   G                N.C.
Memories bring back memories, bring back you...