Compilare: main.cpp: In function 'int main()': main.cpp:81:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < currentNode.dims.size(); i++) ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:93:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i + 1 < currentNode.dims.size() && i >= 1 && currentNode.letters[i - 1] == currentNode.letters[i + 1]) ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:97:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i + 2; j < currentNode.dims.size(); j++) ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:105:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i + 1; j < currentNode.dims.size(); j++) ~~^~~~~~~~~~~~~~~~~~~~~~~~~