LLU

#include <stdio.h>
int awal[100],akhir[100];
int main()
{ int dwi,atas,kanan,otw,waypok,joko;
    scanf("%d",&dwi);
    while(dwi)
    {
        scanf("%d%d%d",&atas,&kanan,&otw);
        waypok=otw;
        for(joko=0;joko<kanan;joko++)
        {
            scanf("%d%d",&awal[joko],&akhir[joko]);

        }
        for(joko=kanan-1;joko>=0;joko--)
        {
            if(waypok==awal[joko]) waypok=akhir[joko];
            else if(waypok==akhir[joko]) waypok=awal[joko];
        } printf("%d\n", waypok); dwi--;
    }return 0;
}