include<stdio.h>
int main(void)
#define A 30
{
int x,c;
scanf("%d",&x);
c=30*x;
printf("%d",c);
return 0;
}
。
include<stdio.h>
int main(void)
#define A 30
{
int x,c;
scanf("%d",&x);
c=30*x;
printf("%d",c);
return 0;
}
。