#include "stdio.h" #define INF 999999999 int solve(int a, int b, int c, int d, int e, int f) { int cuts=0; if (a*c>e) return INF; if (b*d>f) return INF; if (e-(a*c)!=0) cuts++; if (f-(b*d)!=0) cuts++; return cuts+a*b-1; } int main(void) { int a,b,c,d,e,f,min,x; while (1) { scanf("%d %d %d %d %d %d ", &a, &b, &c, &d, &e, &f); if (a==0 && b==0 && c==0 && d==0 && e==0 && f==0) break; min=INF; x=solve(a,b,c,d,e,f); if (x