Compilare: main.cpp: In function 'std::vector<int> solve(std::vector<int>, int)': main.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:42:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:48:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:65:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:73:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1 ; i < sol2.size(); i++) ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:97:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < sol.size(); i++) ~~^~~~~~~~~~~~ main.cpp:101:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1 ; i < sol.size() ; i++) ~~^~~~~~~~~~~~