C

gcc 15.1.0

#3

Overall rank

2.44×

Score

17/17

Problems covered

4

Did not finish

Best result per problem

Problem	Rank	Code	Time	Peak mem
binarytrees	#6 of 19	1.c	565ms	33.3MB
coro-prime-sieve	#19 of 19	1.c	4.93s	52.0MB
edigits	#3 of 19	1.c	25ms	3.4MB
fannkuch-redux	#5 of 19	1.c	1.74s	1.3MB
fasta	#4 of 19	1.c	234ms	1.2MB
http-server	#3 of 19	1.c	24ms	2.3MB
json-serde	#17 of 19	1.c	2.59s	225.2MB
knucleotide	#1 of 18	1.c	164ms	18.9MB
lru	#5 of 19	1.c	137ms	1.4MB
mandelbrot	#7 of 19	2.c	725ms	4.3MB
merkletrees	#8 of 19	1.c	317ms	25.3MB
nbody	#4 of 19	2.c	142ms	1.3MB
nsieve	#9 of 19	1.c	920ms	40.1MB
pidigits	#1 of 19	1.c	168ms	2.4MB
regex-redux	#3 of 18	1.c	596ms	123.9MB
secp256k1	#1 of 19	1.c	288ms	1.6MB
spectral-norm	#1 of 19	4.c	1.08s	1.8MB

Head to head

Compare with

C is faster on 10 of 17 shared problems

Problem	C	C++	Faster by
binarytrees	565ms	649ms	C 1.15×
coro-prime-sieve	4.93s	53ms	C++ 92.50×
edigits	25ms	24ms	C++ 1.03×
fannkuch-redux	1.74s	1.76s	C 1.01×
fasta	234ms	242ms	C 1.03×
http-server	24ms	27ms	C 1.14×
json-serde	2.59s	327ms	C++ 7.93×
knucleotide	164ms	275ms	C 1.68×
lru	137ms	96ms	C++ 1.42×
mandelbrot	725ms	758ms	C 1.05×
merkletrees	317ms	300ms	C++ 1.05×
nbody	142ms	118ms	C++ 1.21×
nsieve	920ms	276ms	C++ 3.33×
pidigits	168ms	180ms	C 1.07×
regex-redux	596ms	658ms	C 1.10×
secp256k1	288ms	430ms	C 1.49×
spectral-norm	1.08s	1.32s	C 1.22×

Over time

Overall score after each run on Apple M5 laptop. Lower is faster.

Recent runs, newest first
Run	Version	Rank	Score	Change
Oct 20, 2026	gcc 15.1.0	#3	2.44×	no change
Oct 20, 2026	gcc 15.1.0	#3	2.44×	56.6% slower
Oct 19, 2026	gcc 15.1.0	unranked	1.56×	–