#include <stdio.h>
 #include <stdlib.h>
 //program that takes an integer and counts 1 increment more
 //n1 stands for number 1
 int main(  )
{
	int n1;
	fscanf(stdin, "%d", &n1);
	n1 = (n1++);
	fprintf(stdout, "%d", n1);
	return(0);
}