#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, x, y;
  cin >> n >> x >> y;
  int perc;
  perc = n * y / 100;
  int ans;
  if (perc <= x) ans = 0;
  if (perc > x) ans = perc - x;
  cout << perc << endl;
  return 0;
}
