The 8th Zhejiang Provincial Collegiate Programming Contest / F - Kagome Kagome

]#include<cstdio>
#include<cstring>
#define MAXN 102
char a[MAXN][22];	//0~n-1

inline int Rint() {int x; scanf("%d", &x); return x;}
#define Fi(n) for(int i=0; i<n; i++)
int n;
char b[22];
int main()
{
int t = Rint();
while(t--)
{
int pos;
n = Rint();
scanf("%s", b);
Fi(n)
{
scanf("%s", a[i]);
if(!strcmp(a[i], b))
pos = i;
}
printf("%s/n", a[(pos+n/2)%n]);	//下标为0~  直接mod n
}
}