C++

g++ 15.1.0

#1

Overall rank

1.64×

Score

17/17

Problems covered

4

Did not finish

Best result per problem

Problem	Rank	Code	Time	Peak mem
binarytrees	#8 of 19	1.cpp	649ms	33.3MB
coro-prime-sieve	#1 of 19	1.cpp	53ms	1.9MB
edigits	#1 of 19	1.cpp	24ms	3.6MB
fannkuch-redux	#6 of 19	1.cpp	1.76s	1.2MB
fasta	#5 of 19	1.cpp	242ms	27.0MB
http-server	#5 of 19	1.cpp	27ms	2.2MB
json-serde	#4 of 19	1.cpp	327ms	175.8MB
knucleotide	#4 of 18	1.cpp	275ms	21.3MB
lru	#3 of 19	1.cpp	96ms	1.4MB
mandelbrot	#9 of 19	1.cpp	758ms	4.4MB
merkletrees	#6 of 19	1.cpp	300ms	33.4MB
nbody	#3 of 19	1.cpp	118ms	1.2MB
nsieve	#2 of 19	1.cpp	276ms	6.6MB
pidigits	#2 of 19	1.cpp	180ms	2.4MB
regex-redux	#5 of 18	1.cpp	658ms	149.5MB
secp256k1	#2 of 19	1.cpp	430ms	1.7MB
spectral-norm	#3 of 19	1.cpp	1.32s	1.8MB

Head to head

Compare with

C++ is faster on 8 of 17 shared problems

Problem	C++	Rust	Faster by
binarytrees	649ms	686ms	C++ 1.06×
coro-prime-sieve	53ms	462ms	C++ 8.67×
edigits	24ms	80ms	C++ 3.34×
fannkuch-redux	1.76s	2.09s	C++ 1.19×
fasta	242ms	203ms	Rust 1.19×
http-server	27ms	89ms	C++ 3.26×
json-serde	327ms	91ms	Rust 3.59×
knucleotide	275ms	167ms	Rust 1.65×
lru	96ms	89ms	Rust 1.08×
mandelbrot	758ms	208ms	Rust 3.65×
merkletrees	300ms	371ms	C++ 1.23×
nbody	118ms	90ms	Rust 1.31×
nsieve	276ms	261ms	Rust 1.06×
pidigits	180ms	802ms	C++ 4.47×
regex-redux	658ms	221ms	Rust 2.98×
secp256k1	430ms	774ms	C++ 1.80×
spectral-norm	1.32s	1.25s	Rust 1.06×

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	g++ 15.1.0	#1	1.64×	no change
Oct 20, 2026	g++ 15.1.0	#1	1.64×	41.5% slower
Oct 19, 2026	g++ 15.1.0	unranked	1.16×	–