#include <stdio.h>
int main(void) {
int a,b,c,d;
while(a<=b){
if(a%c==0){
d++;
}
a++;
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CglpbnQgYSxiLGMsZDsKCXNjYW5mKCIlZCIsJmEpOwoJc2NhbmYoIiVkIiwmYik7CglzY2FuZigiJWQiLCZjKTsKCXdoaWxlKGE8PWIpewoJCWlmKGElYz09MCl7CgkJCWQrKzsKCQkJCgkJfQoJCQkKCQoJCWErKzsKCX1wcmludGYoIiVkIixkKTsKCglyZXR1cm4gMDsKfQo=