#include<stdio.h>
#include<stdint.h>
#include<inttypes.h>

typedef int32_t i32;

void run (void) {
  i32 n;
  scanf ("%" SCNi32, &n);
  printf ("%" PRIi32 "\n", n * 10);
}

int main (void) {
  run();
  return 0;
}