#include<stdio.h>
#include<stdlib.h>

int main(int argc, char ** argv){
	int x = atoi(argv[1]);
	int y;
	int count_nums = 0;
	for(int i = 0; i < 10; i++){
		y = x * 100 / 243;
		// Thing here might happen 10 times
		// Or maybe not!
		// Depends on optimization
		count_nums += y;
	}
	printf("%d\n", count_nums);
	return 0;
}