Compilare: main.cpp: In function 'int main()': main.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(j = 0; j < v[i].size(); j++) { | ~~^~~~~~~~~~~~~ main.cpp:25:34: warning: unused variable 'col' [-Wunused-variable] 25 | int n, m, k, a, i, j, p, mx, col, poz, st, dr, mij, last; | ^~~