hdu 1701

#include<stdio.h>int main(){int t,i,n,m;double q,p;scanf("%d",&t);while(t--){scanf("%lf%lf",&p,&q);for(i=1;;i++){n=i*p/100;m=i*q/100;if(m-n==1){printf("%d\n",i);break;}}}return 0;}