#include <stdio.h>
int toggleFifthBit(int n) {
// Write your code here
int temp_value =n;
temp_value |= (1 << 5);
if(temp_value == n){
n &= ~(1 << 5);
}else{
n = temp_value;
}
return n;
}
int main() {
int n;
scanf("%d", &n);
printf("%d", toggleFifthBit(n));
return 0;
}