using System.Text;
using System.Text.RegularExpressions;
private static void res(string str)
{
Regex reg = new Regex(@"^(\d+)(\.\d+)?%$");
if(reg.IsMatch(str,0))
Console.Write("yes");
else
Console.Write("no"); }
using System.Text.RegularExpressions;
private static void res(string str)
{
Regex reg = new Regex(@"^(\d+)(\.\d+)?%$");
if(reg.IsMatch(str,0))
Console.Write("yes");
else
Console.Write("no"); }
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