Compilare: main.cpp: In function 'int main()': main.cpp:68:14: warning: variable 'x' set but not used [-Wunused-but-set-variable] 68 | for(auto x : v[0]) x = 0; | ^ main.cpp:72:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(e = 0; e < v[i].size(); e++){ | ~~^~~~~~~~~~~~~ main.cpp:81:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(e = 0; e < v[i].size(); e++) v[i][e] += v[i - 1][e] - fm[e].second; | ~~^~~~~~~~~~~~~