Compilare: main.cpp: In function 'void solve()': main.cpp:19:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for( int i = 0; i < txt.size(); ++i ) | ~~^~~~~~~~~~~~ main.cpp:26:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for( int j = 2; j < s.size() - 1; ++j ) { | ~~^~~~~~~~~~~~~~ main.cpp:35:27: 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 j = 1; j < txt.size(); ++j ) { | ~~^~~~~~~~~~~~ main.cpp:40:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | if( poz == s.size() - 2 ) | ~~~~^~~~~~~~~~~~~~~ main.cpp:45:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for( int i = 1; i < txt.size(); ++i ) { | ~~^~~~~~~~~~~~ main.cpp:47:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for( int j = 0; j < len[ i ].size(); ++j ) | ~~^~~~~~~~~~~~~~~~~