Compilare: main.cpp: In function 'int cuplaj(int)': main.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for (i = 0;i < v[(x + 1)/k].size();i++) { | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:27:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (i = 0; i < v[(x + 1)/k].size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~