40分代码,题目传送门
B2066
#include<iostream>
#include<cmath>
using namespace std;
int main(){
double n,people,x,y;
double l,time=0;
int i;
cin>>n;
for(i=1; i<=n; i++) {
cin>>x>>y;
cin>>people;
l=sqrt(1.0*x*x+1.0*y*y);
time+=2*l/50+people*1.5;
}
cout<<ceil(time)<<endl;
return 0;
}