fl.c
#include <stdio.h>
int main() {
int n;
while(scanf("1/%d\n", &n
) == 1) { int x = n;
double y;
int posibilities = 0;
do {
x++;
y = ((double)(n * x)) / (x - n);
//if((1.0f/x) + (1.0f/y) == (1.0f/n)) {
if(y == (int)y) {
posibilities++;
}
}
while(x != y);
}
return 0;
}