scc

 1int
 2main() {
 3	int n;
 4	int t;
 5	int c;
 6	int p;
 7
 8	c = 0;
 9	n = 2;
10	while (n < 5000) {
11		t = 2;
12		p = 1;
13		while (t*t <= n) {
14			if (n % t == 0)
15				p = 0;
16			t++;
17		}
18		n++;
19		if (p)
20			c++;
21	}
22	if (c != 669)
23		return 1;
24	return 0;
25}
26