#include<iostream>
using namespace std;
int main(){
    int l,t,in,tp;
    float r;
    cin>>l;
    cin>>r;
    cin>>t;
    if(l<=0 && r<=0 && r<=0){
        in=(l*r*t)/100;
        tp=l+in;
        cout<<tp;
    }
    else{
        cout<<"Invalid input";
    }
    }
}