Create a distinct matrix with random numbers between 1 to 75

I tried to create a matrix of random numbers ranging from 1 to 75 for a bingo game.But I am not able to generate distinct numbers please help.The first row should have no from 1 to 15,2nd row from 16 to 30,3rd row from 31 to 45,4th row from 46 to 60 and 5th row from 61 to 75.

void creatingbingo()
{ int ar[5][5],values[5],i,j,k,n;


//creating bingo ticket
//initializing the values of ticket
for(i=0;i<=4;i++)
{
    values[i]=0;
}
for(i=0;i<=4;i++)
{
    for(j=0;j<=4;j++)
    {
        loop:k=0;
        do
        {
            uniform_int_distribution<int> rows (((15*(i+1)-15+1)),(15*(i+1)));
            n=rows(randgenerate);
            if(values[k]==n)
            {
                k=0;
                goto loop;
            }
            else
            {
                values[k++]=n;
            }
        }while(k<5);
            ar[i][j]=values[j];//filling the ticket
    }
}
//displaying the ticket
for(i=0;i<5;i++)
{
    for(j=0;j<5;j++)
    {
        cout<<ar[i][j]<<'\t';
    }
    cout<<endl;
}
}

 An example of output which I got is:
 11      14      8       5       10
 16      26      24      25      19
 41      45      38      43      31
 55      52      60      53      60
 62      70      71      68      75