#include <stdio.h>
#include <stdlib.h>
void pr(int** a){
    printf("%d", a[0][0]);
}

    int main(){
        int a0[5]={1,4,7,11,15};
        int a1[5]={2,5,8,12,19};
        int a2[5]={3,6,9,16,22};
        int a3[5]={10,13,14,17,24};
        int a4[5]={18,21,23,26,30};
        int *a[5] = {a0, a1, a2, a3, a4};
        pr(a);
    }