Compilare: main.cpp: In function 'void F(int*, int, int*, int*)': main.cpp:39:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | if(j_0 == val_min.size() - 1){ | ~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:90:18: warning: unused variable 'j' [-Wunused-variable] 90 | int n, m, i, j, mx, pos, a_sz, b_sz; | ^ main.cpp:90:21: warning: unused variable 'mx' [-Wunused-variable] 90 | int n, m, i, j, mx, pos, a_sz, b_sz; | ^~ main.cpp:90:25: warning: unused variable 'pos' [-Wunused-variable] 90 | int n, m, i, j, mx, pos, a_sz, b_sz; | ^~~ main.cpp: In function 'void F(int*, int, int*, int*)': main.cpp:55:13: warning: 'pos' may be used uninitialized [-Wmaybe-uninitialized] 55 | pos = to[pos]; | ~~~~^~~~~~~~~ main.cpp:28:16: note: 'pos' was declared here 28 | int i, mx, pos, j_0; | ^~~