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Cod sursa(job #252535)
#include<fstream>
using namespace std;
ifstream f("nrtri.in");
ofstream g("nrtri.out");
int main(){
unsigned int n,i,j,k,l,c=0,a[800];
f>>n;
for(i=0;i<n;i++) f>>a[i];
for(j=0;j<n;j++){
for(k=0;k<n;k++){
for(l=0;l<n;l++){
if(a[j]!=a[k] && a[k]!=a[l] && a[j]!=a[l] && a[j]+a[k]>=a[l] && a[j]+a[l]>=a[k] && a[k]+a[l]>=a[j]) c++;}}}
g<<c;
f.close();
g.close();
return 0;
}