#include <stdio.h>
int toggleFifthBit(int n) {
// Write your code here
n=n%64;
if(n>=0){
if (n>=32){
n &= ~(1<<5);
}
else {
n|=(1<<5);
}}
else{
if(n<-32){
n |=(1<<5);
}
else{
n&=~(1<<5);
}}
return n;
}
int main() {
int n;
scanf("%d", &n);
printf("%d", toggleFifthBit(n));
return 0;
}