C++ :

#include <bits/stdc++.h>
using namespace std;
int main(void)
{
	int n;
	cin >> n;
	double ans = 0;
	double x,y;
	int person;
	while(n--)
	{
		cin >> x >> y >> person;
		double z = sqrt(x*x + y*y);
		ans += z / 50.0 * 2 + person + person * 0.5;
	}
	cout << (int)(ans+1);
	//cout << ceil(ans);
	//ans *= 10;
 	return 0;
}