？？？

#include<iostream>
#include<cmath>
using namespace std;
int main(){
	int n;
	cin>>n;
	double a,x,y,t=0;
	int p;
	for(int i=1;i<=n;i++){
		cin>>x>>y>>p;
		double c=sqrt(pow(x,2)+pow(y,2))*2;
		t+=c/50+1*p+0.5*p;
	}
	cout<<ceil(t)<<endl;
	return 0;
}```