29 lines
455 B
C++
29 lines
455 B
C++
#include<cstdio>
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#include<cmath>
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using namespace std;
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struct Point
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{
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double x,y,r;
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};
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double line(Point a)
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{
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a.x=abs(a.x);
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a.y=abs(a.y);
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double s=sqrt(a.x*a.x+a.y*a.y);
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double ans=s/50.0*2;
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ans+=a.r*1.5;
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return ans;
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}
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int main()
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{
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double ans=0;
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int n;
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scanf("%d",&n);
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Point wu[n];
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for(int i=0;i<n;i++) scanf("%lf%lf%lf",&wu[i].x,&wu[i].y,&wu[i].r);
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for(int i=0;i<n;i++) ans+=line(wu[i]);
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ans=ceil(ans);
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printf("%.0lf\n",ans);
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return 0;
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}
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