Compilare: main.cpp: In function 'void add(int, int)': main.cpp:18:18: warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare] 18 | for(int g=0;g<max(m[i - 1][j - 1].size(), m[i-1][j].size())+1;g++) | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:21:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | if (g < m[i - 1][j - 1].size()) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:23:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | if (g < m[i - 1][j].size()) | ~~^~~~~~~~~~~~~~~~~~~~