-void
void hello(int target ,int sum) {
if (sum == target) {
count1++;
}
if (sum > target) return;
hello(target, sum + 1);
hello(target, sum + 2);
hello(target, sum + 3);
}
int
int hello1(int target, int sum) {
if (sum == target) return 1;
if (sum > target) return 0;
int count = 0;
for (int i = 1; i <= 3; i++) {
count += hello1(target, sum + i);
}
return count;
}