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Cod sursa(job #139376)
#include<iostream.h>
#include<fstream.h>
#include<math.h>
int main()
{
fstream f,g;
int n,i,j,k;
int bete[810];
f.open("nrtri.in",ios::in);
f>>n;
for(i=1;i<=n;i++)
f>>bete[i];
f.close();
int count=0;
for(i=1;i<=n-2;i++)
for(j=i+1;j<=n-1;j++)
for(k=j+1;k<=n;k++)
if(bete[i]<=abs(bete[k]-bete[j])&&bete[j]<=abs(bete[k]-bete[i])&&bete[i]<=abs(bete[j]-bete[k]))
count++;
g.open("nrtri.out",ios::out);
g<<count+1;
g.close();
return 0;
}