Main.cpp: In function 'void dfs(char, int)':
Main.cpp:9:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<char, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | for (int j=0;j<v1[int(k)].size();j++) {
| ~^~~~~~~~~~~~~~~~~~
Main.cpp:18:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<char, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
18 | for (int j=0;j<v[int(k)].size();j++){
| ~^~~~~~~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:27:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
27 | for (int j=0;j<s.size()-1;j++){
| ~^~~~~~~~~~~
Main.cpp:34:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
34 | for (int j=0;j<s1.size()-1;j++){
| ~^~~~~~~~~~~~