Compilare: user.cpp: In function ‘int main()’: user.cpp:46:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < cycle[1].size(); i ++) ~~^~~~~~~~~~~~~~~~~ user.cpp:51:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j + 1 < cycle[i].size(); j ++) { ~~~~~~^~~~~~~~~~~~~~~~~ user.cpp:70:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j + 1 < cycle[i].size(); j ++) { ~~~~~~^~~~~~~~~~~~~~~~~ user.cpp:66:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(cycle[i].size() == 3) ^