/*
#include <stdlib.h>
int main()
{
printf("Hello world!\n");
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int num1, num2;
scanf("%d %d",&num1, &num2);
printf("%d\n", num1+num2);
printf("%d\n", num1-num2);
printf("%d\n", num1*num2);
printf("%d\n", num1/num2);
printf("%d\n", num1%num2);
printf("%.02f", (float)num1/(float)num2);
return 0;
}
*/
/*
#include <stdio.h>
int main (void)
{
int num1, num2, num3, sum;
float avr;
scanf("%d %d %d", &num1, &num2, &num3);
sum = num1 + num2 + num3;
avr = (float)sum/3;
printf("%d\n",sum);
printf("%.01f",avr);
return 0;
}
*/