#include <stdio.h>
int main() {
int a, b, c, i, count;
scanf("%d %d %d" ,&a
, &b
, &c
); if(a<b){
for(i=a; i<=b; i++){
if(c % i == 0){
count++;
}
}
}
if(a>b){
for(i=b; i<=a; i++){
if(c % i == 0){
count++;
}
}
}
return 0;
}
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