Compilare: main.cpp: In function 'int solve(int, int)': main.cpp:17:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | while(k < Par[dr].size() && Par[dr][k] >= st - 1){ | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:49:34: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 49 | if(Par[u].size() >= k && Par[Par[u][k-1]].size() >= k) u = Par[Par[u][k-1]][k-1]; | ~~~~~~~~~~~~~~^~~~ main.cpp:49:66: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 49 | if(Par[u].size() >= k && Par[Par[u][k-1]].size() >= k) u = Par[Par[u][k-1]][k-1]; | ~~~~~~~~~~~~~~~~~~~~~~~~^~~~