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Cod sursa(job #554383)
#include<fstream>
using namespace std;
ifstream fin("nrtri.in");
ofstream fout("nrtri.out");
int main()
{int n,i,m[10000],cont=0,k,j,a,b,c;
fin>>n;
for(i=1;i<=n;i++)
fin>>m[i];
for(i=1;i<=n;i++)
{a=m[i];
for(j=i+1;j<=n;j++)
{b=m[j];
for(k=j+1;k<=n;k++)
{ c=m[k];
if(a+b>=c&&a+c>=b&&b+c>=a)cont++;
}}}
fout<<cont;
fin.close();
fout.close();
return 0;
}