#include <stdio

#include <stdio.h>
float average(float *score)
{
int i;
float sum=0;
for (i=0;i<10;i++)
sum+=score[i];
return sum/10.0;
}
int main(void)
{
float score[10];
int i;
float aver;
for (i=0; i<10;i++)
scanf("%f",&score[i]);
aver =average(score);
printf("%f",aver);
return 0;
}

#include <stdio.h>
int gcd(int x, int y);
int lcm(int x, int y);
int main()
{
int a,b;
scanf("%d%d",&a,&b);
printf("gcd:%d,lcm:%d\n", gcd(a,b),lcm(a,b));
return 0;
}
int gcd(int x, int y)
{
int r;
do
{
r=x%y;
x=y;
y=r;
}
while(r!=0);
return x;
}
int lcm(int x, int y)
{
return x*y/gcd(x,y);
}

int max_vol(int a[10]);
#include"stdio.h"
main()
{
int a[10],i,m;
for(i=0;i<10;i++)
scanf("%d",&a[i]);
m=max_vol(a);
printf("最大值：max=%d\n",m);
}
int max_vol(int a[10])
{
int max,i;
max=a[0];
for(i=1;i<10;i++)
if(a[i]>max)
max=a[i];
return (max);
}