Compilare: main.cpp: In function 'int main()': main.cpp:71:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | if(dr == v[x].size()) { | ~~~^~~~~~~~~~~~~~ main.cpp:77:13: warning: statement has no effect [-Wunused-value] 77 | for(st; st <= dr; st ++) { | ^~ main.cpp:17:15: warning: unused variable 'max1' [-Wunused-variable] 17 | int n, k, max1 = 1e9 + 7, max2 = 1e9 + 7; | ^~~~ main.cpp:17:31: warning: unused variable 'max2' [-Wunused-variable] 17 | int n, k, max1 = 1e9 + 7, max2 = 1e9 + 7; | ^~~~