#include<stdio.h>
#include<stdlib.h>

void vymen(int *x, int *y)
{
   int pom = *x;
   *x = *y;
   *y = pom;
}

int main(void)
{
 int pocet = 0, **k = 0, *pocet_prvkov, *p, a = 0, i = 0, j = 0, jj = 0,
	 c = 0, o = 0, m = 0, s = 0, sucet = 0, *final_pole, pom;

 scanf("%d", &pocet);
  if((pocet>10) || (pocet<=0))
    exit(1);

 k = (int**)malloc(pocet * sizeof(int*));
 pocet_prvkov = (int*)malloc(pocet * sizeof(int));
 final_pole = (int*)malloc(sucet * sizeof(int));

for (a = 0; a < pocet; a++){
	scanf("%d", &pocet_prvkov[a]);
	sucet += pocet_prvkov[a];
	k[a] = (int*)malloc(pocet_prvkov[a] * sizeof(int));
	for (c = 0; j < pocet_prvkov[a]; c++){
		scanf("%d", &k[i][j]);
	}
}

for (o = 0; o < pocet; o++){
	for ( m = 0; m < pocet_prvkov[o]; m++){
		for (s = 0; s < sucet; s++)
		final_pole[s] = k[o][m];
			pom = s;
			while(pom != NULL){
				pom--;
				if (final_pole[pom] < final_pole[pom + 1])
					vymen(&final_pole[pom], &final_pole[pom+ 1]);
			}
	}
}

  return 0;
}