哪里错了

#include<iostream>
#include<cmath>
#include<vector>
using namespace std;
int main()
{
    int n;
    cin>>n;
   vector<double> x(n),y(n);
   vector<int> people(n);
    double ti[n];
    double time=0;
    for(int i = 0; i<n;i++)
    {
        cin>>x[i]>>y[i]>>people[i];
        ti[i] = 2*sqrt(x[i]*x[i]+y[i]*y[i])/50+people[i]+0.5*people[i];
        time+=ti[i];
    }
    cout<<ceil(time)<<endl;
    return 0;
}