Compilare: main.cpp: In function 'int main()': main.cpp:38:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(int j=0;j<v[i].size();j++) | ~^~~~~~~~~~~~ main.cpp:41:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(ll k=j;k<v[i].size();k++) | ~^~~~~~~~~~~~ main.cpp:58:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int k=1;k<v[i].size()&&k<v[j].size();k++) | ~^~~~~~~~~~~~ main.cpp:58:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int k=1;k<v[i].size()&&k<v[j].size();k++) | ~^~~~~~~~~~~~ main.cpp:73:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare] 73 | if(v[i].size()<=m) | ~~~~~~~~~~~^~~ main.cpp:110:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare] 110 | while(sol.size()<m) | ~~~~~~~~~~^~