Compilare: main.cpp: In function 'int main()': main.cpp:137:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 137 | for(j=0; j<checkdr[i].size(); j++) | ~^~~~~~~~~~~~~~~~~~ main.cpp:155:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 155 | for(j=0; j<checkst[i].size(); j++) | ~^~~~~~~~~~~~~~~~~~ main.cpp:23:17: warning: unused variable 'l' [-Wunused-variable] 23 | int n,i,j,k,l,z,q; | ^ main.cpp:47:9: warning: variable 'lastst' set but not used [-Wunused-but-set-variable] 47 | int lastst; | ^~~~~~