minerals.cpp: In function 'void solve(std::vector<int>, bool)':
minerals.cpp:16:17: warning: unused variable 'aa' [-Wunused-variable]
16 | int aa=query(need[0]);
| ^~
minerals.cpp:17:17: warning: unused variable 'bb' [-Wunused-variable]
17 | int bb=query(need[1]);
| ^~
minerals.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
35 | for (int i=0;i<need.size();i++)
| ~^~~~~~~~~~~~
minerals.cpp:37:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
37 | if (aa.size()==2*rr)
| ~~~~~~~~~^~~~~~
minerals.cpp:50:21: warning: unused variable 'a2' [-Wunused-variable]
50 | int a2=query(need[i]);
| ^~
minerals.cpp:59:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
59 | for (int i=rr;i<need.size();i++)
| ~^~~~~~~~~~~~
minerals.cpp:61:17: warning: unused variable 'a1' [-Wunused-variable]
61 | int a1=query(need[i]);
| ^~
minerals.cpp:67:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
67 | for (int i=rr;i<need.size();i++)
| ~^~~~~~~~~~~~
minerals.cpp:69:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
69 | if (aa.size()==2*rr)
| ~~~~~~~~~^~~~~~
minerals.cpp:81:21: warning: unused variable 'a2' [-Wunused-variable]
81 | int a2=query(need[i]);
| ^~