Compilare: main.cpp: In function 'int main()': main.cpp:54:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | for (i = 1; i < v.size() - 1; i++) { | ~~^~~~~~~~~~~~~~ main.cpp:73:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for (i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp:13:30: warning: unused variable 'd' [-Wunused-variable] 13 | int cer, n, k, i, a, b, c, d, x; | ^