#include<stdio.h> int main() { int i,j,a[6],c,temp,t=0,sum; char p; while(scanf("%d",&c)!=EOF) { sum=0; p=getchar(); if(c<0||c>100) continue; if(p=='\n') { for(i=0;i<5;i++) for(j=0;j<5-i;i++) if(a[j]>a[j+1]) {temp=a[j];a[j]=a[j+1];a[j+1]=temp;} for(i=1;i<=4;i++) sum+=a[i]; if(sum%4==0) printf("%d\n",sum/4); else if(sum%4==1) printf("%d.25\n",sum/4); else if(sum%4==2) printf("%d.5\n",sum/4); else if(sum%4==3) printf("%d.75\n",sum/4); t=0; } else { a[t++]=c; } } return 0; } |
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