Cod sursa(job #2501196)
Utilizator | Cojocaru Andrei Cristian Cojocaru_Andrei_Cristian | Data | 29 noiembrie 2019 11:04:56 |
---|---|---|---|
Problema | Pairs | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | simu | Marime | 0.54 kb |
#include <fstream>
#include <iostream>
using namespace std;
int v[100005];
int cmmdc(int a,int b)
{
while(b)
{
int r=a%b;
a=b;
b=r;
}
return a;
}
int main()
{
//ifstream cin("pairs.in");
//ofstream cout("pairs.out");
int n,cnt=0;
cin>>n;
for(int i=1;i<=n;i++)
cin>>v[i];
for(int i=1;i<=n;i++)
{
for(int j=i+1;j<=n;j++)
{
if(cmmdc(v[i],v[j])==1)
cnt++;
}
}
cout<<cnt;
return 0;
}