OJ Board

thanks, I got AC

#include <iostream>
using namespace std;

int main()
{
int a[100],b[100],c,i,j,k=0;
while(cin >> i >> j)
{
a[k]=i;b[k]=j;k++;
}
for(int l=0;l<k;l++)
{
c=a[l];
for(int m=a[l];m>=b[l];m)
c+=m=m/b[l];

cout << c << endl;
}

}