#include<bits/stdc++.h>
using Int = long long;

using namespace std;

struct FastIO{
  FastIO(){
    cin.tie(0);
    ios::sync_with_stdio(0);
  }
}fastio_beet;

Int p,q,a;
Int check(Int k){
  return (k*p/100)<(k*q/100+a);
}
//INSERT ABOVE HERE
signed main(){
  cin>>p>>q>>a;

  const Int MAX = 1e9;

  vector<Int> ds;
  for(Int i=0;i<100;i++)
    ds.emplace_back((i*p/100)-(i*q/100));
  sort(ds.begin(),ds.end());

  Int ans=check(MAX)-check(0);
  for(Int i=0;i<MAX;i+=100)
    ans+=lower_bound(ds.begin(),ds.end(),(q-p)*i/100+a)-ds.begin();

  cout<<ans<<endl;
  return 0;
}