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Cod sursa(job #842161)
#include<fstream>
#include<algorithm>
using namespace std;
int v[999],n,i,q,k,j,aux;
int main()
{
ifstream fin("nrtri.in");
fin>>n;
for(i=1;i<=n;i++) fin>>v[i];
for(i=1;i<=n-1;i++)
{
for(j=i+1;i<=n;j++)
{if(v[i]>=v[j]){aux=v[i];v[i]=v[j];v[j]=aux;}
}
}
for(i=1;i<n-1;i++) for(j=i+1;j<n;j++) for(k=j+1;k<=n;k++) if(v[i]+v[j]>=v[k]) q++; else break;
ofstream fout("nrtri.out");
fout<<q; return 0; }