Compilare: main.cpp: In function 'void euler(int)': main.cpp:28:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | while(ultim[x] < a[x].size()) | ~~~~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:69:39: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 69 | if(!grade_pare(n) || ciclu.size() != m + 1) | ~~~~~~~~~~~~~^~~~~~~~ main.cpp:72:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int i = 0; i < ciclu.size(); i++) | ~~^~~~~~~~~~~~~~