Compilare: main.cpp: In function 'void MergeSort(std::vector<int>&)': main.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i=0; i<vec.size()/2; i++) { | ~^~~~~~~~~~~~~ main.cpp:19:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for (int i=vec.size()/2; i<vec.size(); i++) { | ~^~~~~~~~~~~ main.cpp:27:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while (i < vec1.size() && j < vec2.size()) { | ~~^~~~~~~~~~~~~ main.cpp:27:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while (i < vec1.size() && j < vec2.size()) { | ~~^~~~~~~~~~~~~ main.cpp:34:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | while (i < vec1.size()) { | ~~^~~~~~~~~~~~~ main.cpp:37:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | while (j < vec2.size()) { | ~~^~~~~~~~~~~~~