Main.cpp: In function 'int check(std::vector<int>)':
Main.cpp:35:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
35 | for(int i=0; i<s.size(); i++)
| ~^~~~~~~~~
Main.cpp:41:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
41 | for(int i=0; i<st.size(); i++)
| ~^~~~~~~~~~
Main.cpp:52:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | for(int i=3; i<st.size(); i++)
| ~^~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:82:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
82 | for(int i=0; i<s.size(); i++)
| ~^~~~~~~~~
Main.cpp:91:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
91 | for(int i=0; i<perms.size(); i++)
| ~^~~~~~~~~~~~~