Compilare: main.cpp: In function 'int main()': main.cpp:38:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for ( k = 0; k < v[j].size(); k++ ) { | ~~^~~~~~~~~~~~~ main.cpp:16:27: warning: variable 'poz' set but not used [-Wunused-but-set-variable] 16 | int n, q, k, i, j, x, poz, ok; | ^~~ main.cpp:16:32: warning: unused variable 'ok' [-Wunused-variable] 16 | int n, q, k, i, j, x, poz, ok; | ^~