Compilare: main.cpp: In function 'int main()': main.cpp:87:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | for(int h=0;h<s[i][j].size();++h) | ~^~~~~~~~~~~~~~~ main.cpp:90:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | while(h<s[i][j].size() && s[i][j][h]>='0' && s[i][j][h]<='9') | ~^~~~~~~~~~~~~~~