#include <stdio.h>
int isPrime(int n){
int i;
for(i=2;i<n;i++){
if(n%i==0){
return 0;
}
}
return 1;
}
int main() {
int i,j,k;
for(i=19;i>=10;i--){
if(isPrime(i)==1){
printf("%d ",i);
}
}
return 0;
}
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