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为什么通不过严重怀疑~~~~#include<stdio.h>
#include<iostream>
using namespace std;
int a[10001];
int cmp(const void*a,const void*b)
{
int t=*(int*)a<*(int*)b?1:0;
return t;
}
void main()
{
int t,n,i,j,s;
cin>>t;
while(t--)
{
cin>>n;
s=-1;
for(i=0;i<n;i++)
cin>>a[i];
qsort(a,n,sizeof(int),cmp);
for(i=0;i<n;i++)
if(s<(i+1)*a[i])s=(i+1)*a[i];
cout<<s<<endl;
}
}
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