Compilare: main.cpp: In function 'int main()': main.cpp:170:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 170 | if(i == a.size() - 1 && j == b.size() - 1) | ~~^~~~~~~~~~~~~~~ main.cpp:170:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 170 | if(i == a.size() - 1 && j == b.size() - 1) | ~~^~~~~~~~~~~~~~~ main.cpp:174:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 174 | if(i < a.size() - 1) | ~~^~~~~~~~~~~~~~ main.cpp:178:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 178 | if(j < b.size() - 1) | ~~^~~~~~~~~~~~~~