//Lab-3, (4)
#include<stdio.h>
int main()
{
int a, i, n=1, j=1;
for(i=1 ; i<=a ; i++)
{
j = n*i;
n = j;
}
return 0;
}
Ly9MYWItMywgKDQpCgojaW5jbHVkZTxzdGRpby5oPgoKaW50IG1haW4oKQp7CiAgICBpbnQgYSwgaSwgbj0xLCBqPTE7CiAgICBzY2FuZigiJWQiLCAmYSk7CgogICAgZm9yKGk9MSA7IGk8PWEgOyBpKyspCiAgICB7CiAgICAgICAgaiA9IG4qaTsKICAgICAgICBuID0gajsKICAgIH0KCiAgICBwcmludGYoIiVkIiwgaik7CgogICAgcmV0dXJuIDA7Cn0K