Compilare: main.cpp: In function 'void solve(int, int)': main.cpp:20:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | if(index > v.size() && sum == 0) { | ~~~~~~^~~~~~~~~~ main.cpp:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | }else if(index > v.size()) { | ~~~~~~^~~~~~~~~~