杭电1408

#include <stdio.h>int main (void){    double a,b,s;    int i,j,k;    while(scanf("%lf%lf",&a,&b)!=EOF)    {        s=0;k=1;j=0;        for(i=a;a>0;a-=b,j++)        {            if(j==k)            j=0,k++,s++;            s++;        }        printf("%lg\n",s);    }    return 0;}