/*
#include <stdio.h>
int main()
{
int x,y;
scanf("%d %d",&x,&y);
printf("%.1f",(float)x*y/2);
return 0;
}
*/
/*
#include <stdio.h>
int main()
{
int x;
scanf("%d",&x);
printf("%d ",x/60);
printf("%d",x%60);
return 0;
}
*/
/*
#include <stdio.h>
int main()
{
int x,y;
scanf("%d %d",&x,&y);
printf("%d",x==y);
return 0;
}
*/
/*
#include <stdio.h>
int main()
{
int x,y;
scanf("%d %d",&x,&y);
printf("%d",x&&y);
}
*/
/*
#include <stdio.h>
int main()
{
int x;
scanf("%d",&x);
printf("%d%%",x);
return 0;
}
*/
/*
#include <stdio.h>
int main()
{
int x1,x2,x3;
scanf("%d %d %d",&x1,&x2,&x3);
printf("%.2f",(float)(x1+x2+x3)/3);
return 0;
}
*/
/*
#include <stdio.h>
int main()
{
char str[50]={};
char x;
printf("attack,please\n");
scanf("%c\n",&x);
printf("%c %c\n",x);
printf("great!\n");
printf("sild please,because soon grean going here!\n");
scanf("%c\n",&x);
printf("%c %c %c %c\n",x);
printf("now here is save\n");
printf("this time is talking");
printf("I talk sos and you is s~~.....\n");
scanf("%c",x);
if(str[0]=='s');
return 0;
}
*/