Compilare: main.cpp: In function 'int main()': main.cpp:32:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int j=0;j<nums[i].size();j++){ | ~^~~~~~~~~~~~~~~ main.cpp:33:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int k=j+1;k<nums[i].size();k++){ | ~^~~~~~~~~~~~~~~