#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int main()
{
const int n = 10;
int a[n], d[n], sum[n];
srand((unsigned) time(NULL));
for(int i=0; i<n; i++)
{
a[i]=rand()%21-10;
d[i]=rand()%21-10;
sum[i]=a[i]+d[i];
}
for(int i=0; i<n; i++)
{
if(sum[i]<0)
{
cout << sum[i] << endl;
break;
}
if(i==n-1 && sum[i]>=0)
{
cout << "None" << endl;
}
}
for(int i=0; i<n; i++)
{ cout.width(3);
cout << a[i] ; }
cout << endl;
for(int i=0; i<n; i++)
{ cout.width(3);
cout << d[i] ; }
cout << endl;
for(int i=0; i<n; i++)
{ cout.width(3);
cout << sum[i] ; }
cout << endl;
cin.ignore();
return 0;
}
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