#include <stdio.h>
int toggleFifthBit(int n) {
// Write your code here
//0x20 is equal to 00010000
//used xor because it will only trigger if not same bit 0^1 = 1 amd 1^1 = 0
n ^= 0x20;
return n;
}
int main() {
int n;
scanf("%d", &n);
printf("%d", toggleFifthBit(n));
return 0;
}