/*#include <stdio.h>
int main()
{
int a,b;
scanf("%d %d",&a,&b);
printf("%d+%d=%d\n",a,b,a+b);
printf("%d-%d=%d\n",a,b,a-b);
printf("%d*%d=%d\n",a,b,a*b);
printf("%d/%d=%d\n",a,b,a/b);
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int a,b;
scanf("%d %d",&a,&b);
printf("%.1f",(float)a*b/2);
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int a,b,c;
scanf("%d %d %d",&a,&b,&c);
printf("%.2f",(float)(a+b+c)/3);
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int a;
scanf("%d",&a);
printf("%d %d",a/60,a%60);
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int a;
float b;
scanf("%d",&a);
b=(float)9/5*a+32;
printf("%.3f",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);
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int a,b;
scanf("%d %d",&a,&b);
printf("%d",b!=a);
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;
}
*/