#include <stdio.h>
int main(void) {
int i,j,a,b,c;
scanf("%d %d %d",&a
,&b
,&c
); for (i=1;i<=c;i++){
if(c%i == 0){
if((i>a) && (i<b)){
j = j+1;
}
else if ((i>b) && (i<a)){
j = j+1;
}
}
}
return 0;
}
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