supertrees.cpp: In function 'void connect_group(int)':
supertrees.cpp:20:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
20 | for(int i=0;i<group.size();i++){
| ~^~~~~~~~~~~~~
supertrees.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
21 | for(int j=0;j<group.size();j++){
| ~^~~~~~~~~~~~~
supertrees.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
29 | for(int i=0;i<group.size()-1;i++){
| ~^~~~~~~~~~~~~~~
supertrees.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | for(int i=0;i<group.size();i++){
| ~^~~~~~~~~~~~~
supertrees.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
39 | for(int j=0;j<cycle.size();j++){
| ~^~~~~~~~~~~~~
supertrees.cpp:52:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | for(int i=0;i<cycle.size()-1;i++)
| ~^~~~~~~~~~~~~~~
supertrees.cpp:56:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
56 | for(int i=0;i<group.size();i++){
| ~^~~~~~~~~~~~~
supertrees.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
59 | for(int j=0;j<group.size();j++){
| ~^~~~~~~~~~~~~
supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:101:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
101 | for(int i=0;i<num_groups;i++)
| ^~~
supertrees.cpp:104:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
104 | build(answer);
| ^~~~~