Dr. Bari is working on some chemical formation. He believes that chemicals and shapes that are regul…
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int main() {
long long int N,i,d,T,j,p=0,k;
scanf(“%lld”,&T);
for(j=1;j<=T;j++)
{
scanf(“%lld”,&N);
if(N<=3)
printf(“%lld”,&p);
else{
d=2;
for(i=5,k=3;i<=N;i++,k++)
{
d=d+k;
}
printf(“%lld\n”,d);
}
}
return 0;
}
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