Update memstats.cc #39

Job	Run time
build (ubuntu-latest, Release, gnu, 17)	14s
build (ubuntu-latest, Release, gnu, 20)	9s
build (ubuntu-latest, Release, gnu, 23)	9s
build (ubuntu-latest, Release, gnu, 26)	16s
build (ubuntu-latest, Release, llvm, 17)	13s
build (ubuntu-latest, Release, llvm, 20)	23s
build (ubuntu-latest, Release, llvm, 23)	14s
build (ubuntu-latest, Release, llvm, 26)	11s
build (windows-latest, Release, gnu, 17)	1m 21s
build (windows-latest, Release, gnu, 20)	1m 17s
build (windows-latest, Release, gnu, 23)	1m 23s
build (windows-latest, Release, gnu, 26)	1m 17s
build (windows-latest, Release, llvm, 17)	1m 39s
build (windows-latest, Release, llvm, 20)	1m 32s
build (windows-latest, Release, llvm, 23)	1m 29s
build (windows-latest, Release, llvm, 26)	1m 28s
build (windows-latest, Release, msvc, 17)	34s
build (windows-latest, Release, msvc, 20)	1m 5s
build (windows-latest, Release, msvc, 23)	1m 6s
build (windows-latest, Release, msvc, 26)	1m 8s
build (macos-latest, Release, llvm, 17)	17s
build (macos-latest, Release, llvm, 20)	18s
build (macos-latest, Release, llvm, 23)	20s
build (macos-latest, Release, llvm, 26)	17s
	18m 20s

Provide feedback