/*#include <stdio.h>
#include <stdlib.h>
int main()
{
int a,b;
scanf("%d %d", &a,&b);
printf("%d", !a&&!b && (!a||b));
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int a;
scanf("%d", &a);
printf("%d", !a);
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int a,b;
scanf("%d %d",&a,&b);
printf("%d",a&&b);
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int a,b;
scanf("%d %d", &a,&b);
printf("%d", a||b);
return 0;
}
*/
/*
#include <stdio.h>
int main()
{
int a,b;
scanf("%d %d",&a,&b);
printf("%d",(a||b) && !(a&&b));
return 0;
}
*/
/*#include<stdio.h>
int main() {
int x, y, z;
scanf("%d %d", &x, &y);
// z = ( 조건 ) ? ( 참 ) : ( 거짓 ) ;
z = ( x > y ) ? (x - y) : (y - x);
printf("%d", z);
}
*/
/*#include <stdio.h>
int main()
{
int b,c;
scanf("%d %d",&b,&c);
printf("%d", b>c ? b:c);
return 0;
}
*/