Compilare: main.cpp: In function 'int main()': main.cpp:52:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (i = 0; i < rez.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'std::vector<int> reuniune(std::vector<int>, std::vector<int>)': main.cpp:103:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 103 | while (x1 <= (x.size() - 1) && y11 <= (y.size() - 1)) | ~~~^~~~~~~~~~~~~~~~~ main.cpp:103:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 103 | while (x1 <= (x.size() - 1) && y11 <= (y.size() - 1)) | ~~~~^~~~~~~~~~~~~~~~~ main.cpp:122:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 122 | while (x1 <= x.size() - 1) | ~~~^~~~~~~~~~~~~~~ main.cpp:127:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 127 | while (y11 <= y.size() - 1) | ~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<int> intersec(std::vector<int>, std::vector<int>)': main.cpp:138:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 138 | while (x1 <= x.size() - 1 && y11 <= y.size() - 1) | ~~~^~~~~~~~~~~~~~~ main.cpp:138:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 138 | while (x1 <= x.size() - 1 && y11 <= y.size() - 1) | ~~~~^~~~~~~~~~~~~~~