Eroare de compilare: main.cpp: In function 'int sum(int)': main.cpp:15:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(int j=0;j<v[i].fi.size();j++) | ~^~~~~~~~~~~~~~~ main.cpp:17:24: error: cannot resolve overloaded function 'back' based on conversion to type 'int' 17 | suma+=max(0,sum(v[i].fi.back)); | ~~~^~~~~~~~~~~~~~ Non zero exit status: 1