Compilare: main.cpp: In function 'int main()': main.cpp:19:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for (j = 0; j <= v.size(); ++ j) | ~~^~~~~~~~~~~ main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (j = 1; j < v.size() and v[j] <= i; ++ j) | ~~^~~~~~~~~~ main.cpp:28:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (; j < v.size(); ++ j) | ~~^~~~~~~~~~