2. Bit Toggle

#include <stdio.h>

int toggleFifthBit(int n) {
    int bit = (n>>5) & 1;
    if(bit) {
        return n & ~(1<<5);
    }
    else {
        return n | (1<<5);
    }
}

int main() {
    int n;
    scanf("%d", &n);
    printf("%d", toggleFifthBit(n));
    return 0;
}