#include<bits/stdc++.h>
#define AC return 0;
#define int long long 
#define pii pair<int,int>
#define all(tar) tar.begin(),tar.end()
const int maxx=2e5+5;
const int mod=998244353; 
using namespace std;
int n,m,t,x;
void solve(){
    cin>>n>>x>>t;
    int ans=4*n*t;
    if((2*n-2)*t>=x){
        cout<<ans<<'\n';return;
    }
    if((2*n-2)*t+t>=x){
        cout<<ans+(x-(2*n-2)*t)<<'\n';return;
    }
    cout<<ans+t+max(x-2*n*t,0)<<'\n';
}
signed main(){
   ios::sync_with_stdio(false);
   cin.tie(0);
   cout.tie(0);
   int T;cin>>T;
   while(T--) solve();
   AC
}   

answer.code: In function ‘void solve()’:
answer.code:19:20: error: no matching function for call to ‘max(long long int, int)’
   19 |     cout<<ans+t+max(x-2*n*t,0)<<'\n';
      |                 ~~~^~~~~~~~~~~
In file included from /usr/include/c++/13/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:51,
                 from answer.code:1:
/usr/include/c++/13/bits/stl_algobase.h:257:5: note: candidate: ‘template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)’
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/13/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
answer.code:19:20: note:   deduced conflicting types for parameter ‘const _Tp’ (‘long long int’ and ‘int’)
   19 |     cout<<ans+t+max(x-2*n*t,0)<<'\n';
      |                 ~~~^~~~~~~~~~~
/usr/include/c++/13/bits/stl_algobase.h:303:5: note: candidate: ‘template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)’
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/13/bits/stl_algobase.h:303:5: note:   template argument deduction/substitution failed:
answer.code:19:20: note:   deduced conflicting types for parameter ‘const _Tp’ (‘long long int’ and ‘int’)
   19 |     cout<<ans+t+max(x-2*n*t,0)<<'\n';
      |                 ~~~^~~~~~~~~~~
In file included from /usr/include/c++/13/algorithm:61:
/usr/include/c++/13/bits/stl_algo.h:5795:5: note: candidate: ‘template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)’
 5795 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/13/bits/stl_algo.h:5795:5: note:   template argument deduction/substitution failed:
answer.code:19:20: note:   mismatched types ‘std::initializer_list<_Tp>’ and ‘long long int’
   19 |     cout<<ans+t+max(x-2*n*t,0)<<'\n';
      |                 ~~~^~~~~~~~~~~
/usr/include/c++/13/bits/stl_algo.h:5805:5: note: candidate: ‘template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)’
 5805 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/13/bits/stl_algo.h:5805:5: note:   template argument deduction/substitution failed:
answer.code:19:20: note:   mismatched types ‘std::initializer_list<_Tp>’ and ‘long long int’
   19 |     cout<<ans+t+max(x-2*n*t,0)<<'\n';
      |                 ~~~^~~~~~~~~~~