Compilare: main.cpp: In function 'int main()': main.cpp:56:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation] 56 | if(!viz[i]) | ^~ main.cpp:59:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if' 59 | for(int i = 1;i<=n;++i) | ^~~ main.cpp:59:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation] main.cpp:62:10: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 62 | while(!st.empty()) | ^~~~~ main.cpp:76:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for(int i = 0;i<ans.size();++i) | ~^~~~~~~~~~~ main.cpp:78:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(int j = 0;j<ans[i].size();++j) | ~^~~~~~~~~~~~~~