poj 2028 When Can We Meet?

#include <iostream>#include <cstdlib>#include <cstdio>#include <cstring>using namespace std;#define maxd 105int n, q;int f[maxd];void input(){    memset(f, 0, sizeof(f));    for (int i = 0; i < n; i++)    {        int num;        scanf("%d", &num);        for (int j = 0; j < num; j++)        { int a; scanf("%d", &a); f[a]++;        }    }}void work(){    int temp = 0;    for (int i = 0; i <= 100; i++)    {        if (f[i] > f[temp]) temp = i;    }    if (f[temp] < q)        printf("0n");    else        printf("%dn", temp);}int main(){    while (scanf("%d%d", &n, &q), n | q)    {        input();        work();    }    return 0;}