Compilare: main.cpp: In function 'int calculateMaxSub(std::vector<int>)': main.cpp:21:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1;i<a.size();i++) ~^~~~~~~~~ main.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1;i<a.size();i++) ~^~~~~~~~~ main.cpp: In function 'int solve()': main.cpp:52:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<ec.size(); i++) ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:94:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<a.size();i++) ~^~~~~~~~~