求助，这篇代码为什么会全RE

#include <bits/stdc++.h>
using namespace std;

/*unsigned*/ long long t,ans;
/*unsigned*/ long long n,p,q;

int main(){
	cin>>t;
	for(int k=1;k<=t;k++){
		cin>>n>>p>>q;
		if(!p){
			cout<<"0\n";
		}
		if(n==1){
			cout<<p<<"\n";
		}
		long long t=(q/p-1)/2;
		long long t2=n-t;
		if(t2%2){
			t++;
			t2--;
		}
		long long ans=t*t*p/2+(t2/2)*q;
		cout<<ans<<"\n";
	}
	return 0;
}