10分で解けた
#include
using namespace std;
void main()
{
int i[5], total;
total = 0;
for ( i[0] = 1; i[0] <= 90; i[0]++ )
for ( i[1] = i[0]+2; i[1] <= 90; i[1]++ )
for ( i[2] = i[1]+2; i[2] <= 90; i[2]++ )
for ( i[3] = i[2]+2; i[3] <= 90; i[3]++ )
for ( i[4] = i[3]+2; i[4] <= 90; i[4]++ )
total++;
cout << "total patern is " << total << endl;
}