// editor3
#include <iostream>
using namespace std;
int main(){
    int interest,p,n;
    float r;
    cin>>p;
    cin>>r;
    cin>>n;
    if p<0{
        cout<<"Invalid input";
    }
    else{
    interest=(p*n*r)/100;
    int total=p+interest;
    cout<<total;
    return 0;
}}