1int first_divisor(unsigned int a) {
2 unsigned int i;
3
4 for (i = 2; i < a; i++) {
5 if (a % i == 0) {
6 return i;
7 }
8 }
9
10 return a;
11}
12
13int main(unsigned int a) {
14 if (a <= 10) {
15 if (a > 1 && first_divisor(a) == a) {
16 return 1;
17 } else {
18 return 0;
19 }
20 }
21}