U229819...

#include <iostream>
#include <algorithm>
using 
	namespace 
		std;
int 
	n, 
	a[100005], 
	m, 
	L = 0, 
	R;
int 
	main
		(
			void
		)
		{
			cin 
				>> 
					n 
				>> 
					m;
			for 
				(
					int 
						i
							= 0;
					i
						< n;
					i
						++
				)
					cin
						>> a
							[
								i
							];
			R
				= n;
			sort 
				(
					a,
					a + n
				);
			while
				(
					L < R
				)
					{
						while
							(
								a[L]
									+ a[R] 
									!= m
							)
								R 
									--;
						if 
							(
								a[L]
									+ a[R] 
									== m
							)
								{
									cout 
										<< a[L] 
										<< " " 
										<< a[R];
									return
										0;
								}
						L 
							--;	
					}
			return 
				0;
		}

我自己的编译器能认出来啊（