Compilare: main.cpp: In function 'int main()': main.cpp:32:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int j = 0; j < v[poz].size(); j++) | ~~^~~~~~~~~~~~~~~ main.cpp:15:15: warning: unused variable 'a' [-Wunused-variable] 15 | int n, m, a, b, c, d, e, melodie, sol = 0; | ^ main.cpp:15:18: warning: unused variable 'b' [-Wunused-variable] 15 | int n, m, a, b, c, d, e, melodie, sol = 0; | ^