```cpp
# include <queue>
# include <ctime>
# include <vector>
# include <cstdio>
# include <cstring>
# include <algorithm>
# define F(i, a, b) for (int i = a; i < b; i++)
using namespace std;
int main(){
int n;
scanf("%d", &n);
F(j, 0, n){
int a, b, c;
scanf("%d%d%d", &a, &b, &c);
t t = b;
if (c == 2){
while (b){
printf("%lld ", (long long) a * (b % 10));
b /= 10;
}
}
printf("%lld\n", (long long) a * t);
}
return 0;
}
```