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Cod sursa(job #528180)
#include<fstream.h>
int a[1000],b[1000],i,j,k,l,n,p,aux,s=0;
int main(){
ifstream fin("nrtri.in");
fin>>n;
for(i=1;i<=n;i++)
{
fin>>a[i];
}
fin.close();
ofstream fout("nrtri.out");
for(i=1;i<=n;i++)
{
for(j=n;j>=i;j--)
{
if(a[j]<a[j+1])
{
aux=a[j];
a[j]=a[j+1];
a[j+1]=aux;
}
}
}
for(i=1;i<=n;i++)
{
for(j=i+1;j<=n;j++)
{
for(p=j+1;p<=n;p++)
{
if(a[i]<a[j]+a[p])
s++;
}
}}
fout<<s;
fout.close();
return 0;
}