#include <stdio.h>
int toggleFifthBit(int n) {
// Write your code here
int bit5 = n & (1<<5); // basically triggers if 0 or 1 for 5th bit
// originally i had int bit5 = n & (00100000); which doesnt work because c doesnt understand 00100000 to be binary...
if (bit5 == 0) {
n |= (1<<5); //set 5th bit to 1
}
else {
n &= ~(1<<5);} //clear 5th bit
return n;
}
int main() {
int n;
scanf("%d", &n);
printf("%d", toggleFifthBit(n));
return 0;
}