Compilare: main.cpp: In function 'int main()': main.cpp:24:46: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int j1 = 0; j1 + i1 <= mij && j1 <= b.size(); j1++) { ///luam ca pe cub | ~~~^~~~~~~~~~~ main.cpp:27:32: 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 i2 = 0; i2 <= a.size() - i1; i2++) { | ~~~^~~~~~~~~~~~~~~~ main.cpp:29:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | if(j2 + j1 > b.size() || j2 < 0) | ~~~~~~~~^~~~~~~~~~