#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; double x[n],y[n],t=0; int p[n]; for(int i=0;i<n;i++){ cin>>x[i]>>y[i]>>p[i]; t+=sqrt(x[i]*x[i]+y[i]*y[i]+0.0)*0.04+1.5*p[i]; } cout<<ceil(t); return 0; }