57 lines
934 B
C++
57 lines
934 B
C++
#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <algorithm>
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using namespace std;
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double v[1010];
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int main()
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{
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int n;
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while(scanf("%d",&n)==1&&n)
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{
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double sum=0;
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for(int i=0;i<n;i++)
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{
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scanf("%lf",&v[i]);
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sum+=v[i];
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}
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double ave=sum/n;
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/// Why?
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int c=ave*100;
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double ave_x=c/100+c%100*0.01;
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double ave_f;
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if(ave==ave_x)
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{
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ave_f=ave_x;
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}
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else
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{
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ave_f=ave_x+0.01;
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}
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double totalA=0;
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double totalB=0;
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for(int i=0;i<n;i++)
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{
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if(v[i]<=ave)
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{
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totalA+=ave_x-v[i];
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}
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else
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{
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totalB+=v[i]-ave_f;
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}
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}
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double total=max(totalA,totalB);
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printf("$%.2f\n",total);
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}
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return 0;
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}
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