Compilare: main.cpp: In function 'int main()': main.cpp:30:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | while(i<v1.size()||j<v2.size()){ | ~^~~~~~~~~~ main.cpp:30:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | while(i<v1.size()||j<v2.size()){ | ~^~~~~~~~~~ main.cpp:31:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | if(i<v1.size()){ | ~^~~~~~~~~~ main.cpp:44:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | }else if(j<v2.size()){ | ~^~~~~~~~~~