Cod sursa(job #2455477)
Utilizator | Data | 11 septembrie 2019 20:14:08 | |
---|---|---|---|
Problema | Triplete | Scor | 90 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.62 kb |
#include <iostream>
#include <fstream>
#include <bitset>
using namespace std;
int n,m,sol;
bitset<5000>a[5000],aux;
void citire()
{
ifstream fin("triplete.in");
fin>>n>>m;
int x,y;
for(int i=0;i<m;i++)
{
fin>>x>>y;
a[x][y]=1;
a[y][x]=1;
}
for(int i=1;i<=n;i++)
for(int j=i+1;j<=n;j++)
if(a[i][j])
{
aux=(a[i]&a[j]);
sol+=aux.count();
}
}
void afisare()
{
ofstream fout("triplete.out");
fout<<sol/3;
}
int main()
{
citire();
afisare();
return 0;
}