#include <stdio.h>

int not(int x){
if(x == 0){
return 1;
}
else if(x == 1){
return 0;
}
else {
return -1;
}
}
int main(void){
int num;
int ans;
scanf("%d",&num);
ans = not(num);
if(ans == 1 || ans == 0){
printf("%d\n",ans);
}
else{
printf("エラー\n");
}
return 0;
}