#include <stdio.h>
int main() {
int P, n1, n2;
scanf("%d", &P);
scanf("%d", &n1);
scanf("%d", &n2);
if(P == 0){
if((n1+n2) % 2 == 0){
printf("0");
}
else{
printf("1");
}
}
else{
if((n1+n2) % 2 == 0){
printf("1");
}
else{
printf("0");
}
}
return 0;
}
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