Compilare: main.cpp: In function 'int main()': main.cpp:63:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for(int i=0;i<nodes.size();i++) | ~^~~~~~~~~~~~~ main.cpp:66:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | if(capete.empty()||i+1==nodes.size()) | ~~~^~~~~~~~~~~~~~ main.cpp:76:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for(int z=0;z<single.size();z++) | ~^~~~~~~~~~~~~~ main.cpp:106:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 106 | for(int i=0;i+1<capete.size();i+=2) | ~~~^~~~~~~~~~~~~~