Fashion Shows Problem Spoj solution

-

 #include <iostream>

#include<algorithm>

using namespace std;


int main() {

int t;

cin>>t;

while(t--){

int n,i,s=0;

cin>>n;

int a[n],b[n];

for(i=0;i<n;i++){

cin>>a[i];

}

for(i=0;i<n;i++){

cin>>b[i];

}

sort(a,a+n);

sort(b,b+n);

for(i=0;i<n;i++){

s+=a[i]*b[i];

}

cout<<s<<endl;

}

return 0;

}

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