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Cod sursa(job #323565)
#include<fstream>
#define maxn 1000003
using namespace std;
ifstream f("divprim.in");
ofstream g("divprim.out");
int a[maxn],i,j,n,k,t,sol[maxn][8];
int main()
{
n=1000000;
for(i=2;i<=n;++i)
if(!a[i])
for(j=i;j<=n;j+=i)
++a[j];
sol[1][0]=1;
for(i=2;i<=n;++i)
for(j=0;j<=7;++j)
if(a[i]==j)
sol[i][j]=i;
else
sol[i][j]=sol[i-1][j];
f>>t;
for(i=1;i<=t;++i)
{
f>>n>>k;
g<<sol[n][k]<<"\n";
}
f.close();
g.close();
return 0;
}