Compilare: main.cpp: In function 'll solve(int, int)': main.cpp:43:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < cand.size() - 1; h++) ~~^~~~~~~~~~~~~~~~~ main.cpp:53:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < cand.size(); h++) { ~~^~~~~~~~~~~~~