Compilare: main.cpp: In function 'int main()': main.cpp:21:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++){ ~~^~~~~~~~~~ main.cpp:22:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i; j < v.size(); j++){ ~~^~~~~~~~~~ main.cpp:23:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = j; k < v.size(); k++){ ~~^~~~~~~~~~