See https://cppinsights.io/lnk?code=c3RydWN0IGFsaWduYXMoZG91YmxlKSBmb28gewogICAgaW50IGk7Cn07CgpzdGF0aWNfYXNzZXJ0KHNpemVvZihmb28pID09IDgpOwo=&insightsOptions=cpp2a&std=cpp2a&rev=1.0