Language Details: JavaScript

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JavaScript is a prototype-based scripting language that is dynamic, weakly typed, and has first-class functions.

— JavaScript article on Wikipedia
domob (1 set)
aditsu (1 set)
ashi009 (4 sets)
OldMan (1 set)
hasipon (7 sets)
MaximKulikov (3 sets)
idy (5 sets)
Tavis (1 set)
Pep (11 sets)
Rulle (1 set)
victor.j8 (1 set)
sta.k (10 sets)
efoster (7 sets)
10iii (11 sets)
creelyvh (1 set)
srou (1 set)
Sedols (1 set)
Proof (7 sets)
georgecalm (5 sets)
XerberuZ (1 set)
gti (7 sets)
kecso (9 sets)
CyrusWong (1 set)
kapilreddy (3 sets)
josha (6 sets)		mpvvliet (5 sets)
lwz (3 sets)
hpmv (7 sets)
bloody (1 set)
M.Katsuragi (7 sets)
huang47 (7 sets)
yerich (7 sets)
Chaws (1 set)
elevation (8 sets)
k2nr (1 set)
styletron (6 sets)
Taomin (5 sets)
L.S. (5 sets)
anthonychuang (6 sets)
thegalah (3 sets)
gengkev (5 sets)
Ferdy89 (5 sets)
kjarujit (5 sets)
Sondh (3 sets)
muramasa (5 sets)
Shraymonks (5 sets)
tadeuzagallo (2 sets)
Olostan (5 sets)
Page. (5 sets)
Webmelzer (4 sets)		NullColaShip (4 sets)
hokuto (1 set)
kilork (4 sets)
darcy (1 set)
Seriouseli (4 sets)
jdtye (4 sets)
JerichoKain (4 sets)
arleytriana (4 sets)
Jullen (1 set)
merwaaan (3 sets)
cha0s6983 (3 sets)
luisivan (3 sets)
Skaught (3 sets)
im007boy (3 sets)
peterslagter (3 sets)
mciparelli (3 sets)
DashK (3 sets)
Bojenator (3 sets)
izqui (3 sets)
abhijitkane (2 sets)
frewsxcv (2 sets)
sgmonda (2 sets)
Tuddrussel (2 sets)
Frajer (1 set)
Akkuma (2 sets)		rG0ne (2 sets)
krazykylep (1 set)
uPaymeiFixit (2 sets)
marduk (1 set)
joaohcrangel (1 set)
OhaiBBQ (1 set)
shadowzhou (1 set)
k014 (1 set)
rod (1 set)
oscarsan (1 set)
Nogbog (1 set)
kpantic (1 set)
Lohktar (1 set)
Eriq (1 set)
kuryaki (1 set)
sproates (1 set)
johan (1 set)
BrianJG (1 set)
sebmck (1 set)
llun (1 set)
yuitest (1 set)
hamzahik (1 set)
beejei (1 set)
FelipeNMoura (1 set)
pius (1 set)

Problems solved

Qualification Round (264 solutions by 102 contestants):
Round 1A (24 solutions by 14 contestants):
Round 1B (11 solutions by 6 contestants):
Round 1C (19 solutions by 11 contestants):
Round 2 (4 solutions by 3 contestants):

Submission Origin

United States (18 contestants)
China (8 contestants)
Spain (7 contestants)
Canada (7 contestants)
Japan (6 contestants)
Australia (6 contestants)
Brazil (5 contestants)
Thailand (3 contestants)
Taiwan (3 contestants)
Netherlands (3 contestants)
United Kingdom (2 contestants)
Sweden (2 contestants)
Singapore (2 contestants)
Mexico (2 contestants)		India (2 contestants)
Hong Kong (2 contestants)
France (2 contestants)
Colombia (2 contestants)
Vietnam (1 contestant)
Venezuela (1 contestant)
Ukraine (1 contestant)
Turkey (1 contestant)
South Korea (1 contestant)
Serbia (1 contestant)
Saint Kitts and Nevis (1 contestant)
Russia (1 contestant)
Romania (1 contestant)
Portugal (1 contestant)		New Zealand (1 contestant)
Morocco (1 contestant)
Malaysia (1 contestant)
Latvia (1 contestant)
Italy (1 contestant)
Israel (1 contestant)
Iceland (1 contestant)
Hungary (1 contestant)
Germany (1 contestant)
Czech Republic (1 contestant)
Chile (1 contestant)
Austria (1 contestant)
Argentina (1 contestant)