Compilare: main.cpp: In function 'void solve()': main.cpp:51:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (int i = 0; i < v.size(); ++i) | ~~^~~~~~~~~~ main.cpp:71:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for (int i = 0; i < v.size(); ++i) | ~~^~~~~~~~~~