Compilare: main.cpp: In function 'std::vector<int> inter(std::vector<int>, std::vector<int>)': main.cpp:18:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | while (i < a.size() and j < b.size()) | ~~^~~~~~~~~~ main.cpp:18:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | while (i < a.size() and j < b.size()) | ~~^~~~~~~~~~ main.cpp:17:9: warning: unused variable 'val' [-Wunused-variable] 17 | int val = b.size(); | ^~~ main.cpp: In function 'std::vector<int> reun(std::vector<int>, std::vector<int>)': main.cpp:41:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | while (i < a.size() and j < b.size()) | ~~^~~~~~~~~~ main.cpp:41:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | while (i < a.size() and j < b.size()) | ~~^~~~~~~~~~ main.cpp:56:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | while (i < a.size()) | ~~^~~~~~~~~~ main.cpp:58:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | while (j < b.size()) | ~~^~~~~~~~~~ main.cpp: In function 'std::vector<int> scad(std::vector<int>, std::vector<int>)': main.cpp:68:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | while (i < a.size() and j < b.size()) | ~~^~~~~~~~~~ main.cpp:68:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | while (i < a.size() and j < b.size()) | ~~^~~~~~~~~~ main.cpp:82:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | while (i < a.size()) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:147:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 147 | for (i = 0; i + 1 < ans.size(); i++) | ~~~~~~^~~~~~~~~~~~