#include <iostream>
using namespace std;
int main(int argc, char** argv)
{
srand(time(NULL));
const int n = 5;
int mas[n], sum=0;
for(int i=0; i<n; i++)
{
mas[i] = rand()%20;
cout<<mas[i]<<" ";
}
for(int i=0; i<n; i++)
{ if(i%2==0)
{
sum+=mas[i];
}
else
{
sum-=mas[i];
}
}
cout<<"Sum is: "<< sum;
return 0;
}