View Code of Problem 31

#include<stdio.h>
#include<math.h>
int main(){
	long int k;
	long int n;
	while(scanf("%ld",&k)!=EOF){
		if(k<1)
		break;
		n=23+3*5*7*(k-1);
		printf("%ld\n",n);
	}
    printf("\n");
	return 0;
}