Pagini recente » Cod sursa (job #133419) | Cod sursa (job #1797935) | Cod sursa (job #1242030) | Cod sursa (job #1494844) | Cod sursa (job #1870431)
#include <fstream>
using namespace std;
ifstream f ("pascal.in");
ofstream g ("pascal.out");
int v[5000002],v2[5000002],r,d,sol,i,nr;
int main()
{
f>>r>>d;
if(d==2||d==3||d==5)
{
for(i=1;i<=r;i++)
{
nr=i;
while(nr%d==0)
{
++v[i];
nr=nr/d;
}
v[i]=v[i]+v[i-1];
}
}
else if(d==4)
{
for(i=1;i<=r;i++)
{
nr=i;
while(nr%2==0)
{
++v[i];
nr=nr/2;
}
v[i]=v[i]+v[i-1];
}
}
else
{
for(i=1;i<=r;i++)
{
nr=i;
while(nr%2==0)
{
++v[i];
nr=nr/2;
}
while(nr%3==0)
{
++v2[i];
nr=nr/3;
}
v[i]=v[i]+v[i-1];
v2[i]=v2[i]+v2[i-1];
}
}
for(i=0;i<=r;i++)
{
if(d==6&&v[r]-v[r-i]-v[i]>0&&v2[r]-v2[r-i]-v2[i]>0) ++sol;
if(d==4&&v[r]-v[r-i]-v[i]>1) ++sol;
else if(d!=6&&d!=4&&v[r]-v[r-i]-v[i]>0) ++sol;
}
g<<sol;
return 0;
}