Submission #12776

#	Time	Username	Problem	Language	Result	Execution time	Memory
12776		gs13068	양말 찾기 (KPI13_socks)	C++98	1 / 1	1972 ms	1600 KiB

socks

#include<cstdio>

int d[2][65536];

int main()
{
    int i,n,a,b;
    scanf("%d",&n);
    while(n--)
	{
		scanf("%d",&i);
		i+=1000000000;
        d[0][i>>16]^=i;
        d[1][i&65535]^=i;
	}
	a=b=0;
	for(i=0;i<65536;i++)if(d[0][i])
	{
        if(a)b=d[0][i];
        else a=d[0][i];
	}
	if(!b)
	{
		a=b=0;
		for(i=0;i<65536;i++)if(d[1][i])
		{
			if(a)b=d[1][i];
			else a=d[1][i];
		}
	}
	if(a>b)a^=b^=a^=b;
	printf("%d %d",a-1000000000,b-1000000000);
}

• Subtask 1: 1 / 1