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Cod sursa(job #866146)
#include<fstream>
#include<vector>
#include<algorithm>
#define dim 3005
using namespace std;
ifstream f("desc.in");
ofstream g("desc.out");
vector < long long > di;
int a[dim][dim];
int n,k,i,j,nrd;
int main () {
f>>n>>k;
for(i=2;i*i<=n;++i){
if(n%i)
continue;
di.push_back(i);
if(i*i!=n)
di.push_back(n/i);
}
di.push_back(1);
di.push_back(n);
sort(di.begin(),di.end());
nrd=di.size()-1;
for(i=1;i<=nrd;++i){
a[0][i]=1;
}
for(i=1;i<=nrd;++i) {
for(j=nrd,k=0;j>0 ;--j) {
a[i][j]=a[i][j+1];
if(di[i]%di[j])
continue;
for(;di[k]<di[i]/di[j] && k<=nrd;++k) {
a[i][j]+=a[k][j];
}
}
}
g<<a[nrd][1]<<"\n";
return 0;
}