#include <bits/stdc++.h>
using namespace std;
#define FOR(i,n) for (int i=1;i<=n;i++)
#define REP(i,a,b) for (int i=a;i<=b;i++)
#define pb push_back
#define mp make_pair
#define ll long long
#define pos(x,y) (x+(y)*n)
const int N=100000+10;
const int inf=0x3f3f3f3f;
const ll mod=1000000007;
const double eps=1e-8;


double p,q; 
int main() {
    //freopen("in.txt","r",stdin);
    //freopen("out.txt","w",stdout);
    cin>>p>>q;
    p*=0.01,q*=0.01;
    p+=0.0000000001;q-=0.0000000001;
    int l=1,r=1000000;
    int mid=0;
    int ans=0;
    while (l<=r) {
        mid=(l+r)>>1;
        if (int(mid*p)<=int(mid*q)-1) {
            ans=mid;
            r=mid-1;
        } else {
            l=mid+1;
        }
    }
    cout<<ans<<endl;
    return 0;
}

为什么这样不行？会WA