then what is the problem with my code?
#include<bits/stdc++.h>
using namespace std;
int main()
{
int t;
cin>>t;
unsigned int a[t][2],r[t];
for(int i=0;i<t;i++)
{
cin>>a[i][0]>>a[i][1];
r[i]=0;
for(int j=0;j<a[i][1];j++)
{
r[i]=r[i]+a[i][0];
}
}
for(int i=0;i<t;i++)
cout<<r[i]<<endl;
}