Compilare: main.cpp: In function 'int main()': main.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(int k = 0; k < val.size(); k++){ | ~~^~~~~~~~~~~~ main.cpp:41:9: warning: unused variable 'nmin' [-Wunused-variable] 41 | int nmin = 0, d0 = 0, d1 = 0; | ^~~~ main.cpp:41:19: warning: unused variable 'd0' [-Wunused-variable] 41 | int nmin = 0, d0 = 0, d1 = 0; | ^~ main.cpp:41:27: warning: unused variable 'd1' [-Wunused-variable] 41 | int nmin = 0, d0 = 0, d1 = 0; | ^~