Compilare: main.cpp: In function 'bool inside(int, int)': main.cpp:24:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | return (a >= 1 && b >= 1 && a <= lin.size() && b <= col.size()); | ~~^~~~~~~~~~~~~ main.cpp:24:54: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | return (a >= 1 && b >= 1 && a <= lin.size() && b <= col.size()); | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:61:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for (int i = 0; i < lin1.size(); i += 2) | ~~^~~~~~~~~~~~~ main.cpp:85:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | for (int i = 1; i <= lin.size(); ++i) | ~~^~~~~~~~~~~~~ main.cpp:86:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 86 | for (int j = 1; j <= col.size(); ++j) | ~~^~~~~~~~~~~~~ main.cpp:92:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | for (int i = 1; i <= lin.size(); ++i) | ~~^~~~~~~~~~~~~ main.cpp:93:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | for (int j = 1; j <= col.size(); ++j) | ~~^~~~~~~~~~~~~