SPOJ AMR10F Cookies Piles

 1
 2  
 3  /*************************************************************************
 4  	> File Name: code/2015summer/#4/F.cpp
 5  	> Author: 111qqz
 6  	> Email: rkz2013@126.com 
 7  	> Created Time: 2015年07月29日 星期三 21时47分23秒
 8   ************************************************************************/
 9  
10  #include<iostream>
11  #include<iomanip>
12  #include<cstdio>
13  #include<algorithm>
14  #include<cmath>
15  #include<cstring>
16  #include<string>
17  #include<map>
18  #include<set>
19  #include<queue>
20  #include<vector>
21  #include<stack>
22  #define y0 abc111qqz
23  #define y1 hust111qqz
24  #define yn hez111qqz
25  #define j1 cute111qqz
26  #define tm crazy111qqz
27  #define lr dying111qqz
28  using namespace std;
29  #define REP(i, n) for (int i=0;i<int(n);++i)  
30  typedef long long LL;
31  typedef unsigned long long ULL;
32  const int inf = 0x7fffffff;
33  int main()
34  {
35      int T;
36      int n,a,d;
37      cin>>T;
38      while (T--)
39      {
40  	scanf("%d %d %d",&n,&a,&d);
41  	cout<<n*a+n*(n-1)/2*d<<endl;
42      }
43    
44  	return 0;
45  }
46  
47
48