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Cod sursa(job #304253)
#include<fstream>
using namespace std;
ifstream f1 ("divprim.in");
ofstream f2 ("divprim.out");
int v[1000001],m[1000001][8],i,j;
void ciur()
{
for (i=2; i<=1000000; i++)
if (v[i]==0)
for (j=i; j<=1000000; j+=i) v[j]++;
}
void rezolvare()
{
for (i=2; i<=1000000; i++)
{
j=1;
while (m[i-1][j]>0) {m[i][j]=m[i-1][j]; j++;}
m[i][v[i]]=i;
}
}
int main()
{int n,k,t,i;
f1>>t;
ciur();
rezolvare();
for (i=1; i<=t; i++)
{f1>>n>>k;
f2<<m[n][k]<<endl;
}
return 0;
}