Compilare: main.cpp: In function 'void calc(int)': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (int i=0;i<g[k].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:44:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for (int i=0;i<v.size();i++) | ~^~~~~~~~~ main.cpp:44:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 44 | for (int i=0;i<v.size();i++) | ^~~ main.cpp:46:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 46 | cout<<'\n'; | ^~~~ main.cpp:68:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for (int i=0;i<v.size();i++,cout<<'\n') | ~^~~~~~~~~ main.cpp:69:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for (int j=0;j<g[i].size();j++,cout<<' ') | ~^~~~~~~~~~~~