P5082
by FireFlyAnunn @ 2022-08-20 10:18:02
@[FireFlyAnunn](/user/773552)
int n;
double sum,ans,s;
cin>>n;
int a[n+5],b[n+5],c[n+5];
for(int i=1;i<=n;i++){
cin>>a[i];
sum+=a[i];
}
for(int i=1;i<=n;i++){
cin>>b[i];
ans+=b[i];
}
for(int i=1;i<=n;i++){
c[i]=a[i]-b[i];
s+=c[i];
}
printf("%.6lf",(sum*3-ans*2)/s);
return 0;
by songmeiyi @ 2022-09-12 10:12:31
@[songmeiyi](/user/495149) 谢谢大佬！
by FireFlyAnunn @ 2022-09-15 19:43:34