Compilare: main.cpp: In function 'int main()': main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int j=0; j<l[i].size(); j++) | ~^~~~~~~~~~~~ main.cpp:24:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int j=0; j<l[i].size(); j++){ | ~^~~~~~~~~~~~ main.cpp:25:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int k=0; k<c[l[i][j]].size(); k++){//parcurgem si coloana elementului | ~^~~~~~~~~~~~~~~~~~