#include <stdio.h>
int multi(int m,int n)
{
if(n==0)
return 0;
else
return m+multi(m,n-1);
}
int main(void) {
int m,n;
printf("%d×%d=%d\n",m
,n
,multi
(m
,n
)); return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CmludCBtdWx0aShpbnQgbSxpbnQgbikKewogICAgaWYobj09MCkKICAgICAgICByZXR1cm4gMDsKCiAgICBlbHNlCiAgICAgICAgcmV0dXJuIG0rbXVsdGkobSxuLTEpOwp9CgppbnQgbWFpbih2b2lkKSB7CglpbnQgbSxuOwogICAgc2NhbmYoIiVkICVkIiwmbSwmbik7CiAgICBwcmludGYoIiVkw5clZD0lZFxuIixtLG4sbXVsdGkobSxuKSk7CglyZXR1cm4gMDsKfQo=