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Cod sursa(job #887093)
#include<fstream>
using namespace std;
int div[1000005], sol[1000005][10];
void ciur()
{
int i, j;
for(i=2;i<=1000005;i++)
if(!div[i])
for(j=i;j<=1000005;j+=i)
div[j]++;
}
int main()
{
int n, nr, k, i, j;
ifstream f("divprim.in");
ofstream g("divprim.out");
ciur();
for(i=2;i<1000001;i++)
{
for(j=0;j<=7;j++)
sol[i][j]=sol[i-1][j];
sol[i][div[i]]=i;
}
f >> nr;
for(j=1;j<=nr;j++)
{
f >> n >> k;
g << sol[n][k];
}
return 0;
}