#include <bits/stdc++.h>
using namespace std;
int main(){
    int n,a[7],b[7],t,d,e,g,sum;
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>a[i]>>b[i];
    }
    cin>>t;
    for(int c=0;c<n;c++){
        d=d+(100/a[c])*b[c];
    }
    if(d>=t){
        cout<<"Already Au."; 
    }
    else if(d<t){
        e=d-t;
        for(int f=0;f<n;f++){
            if((a[f]-b[f])*(100/a[f])>t-d){
                g=100/a[f];
                sum=(t-d)/g;
                cout<<sum;
            }
            else{
                cout<<"NaN";
            }
        }
    }
}