Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:42:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | while(pt[nod]<muchii[nod].size()) | ~~~~~~~^~~~~~~~~~~~~~~~~~~ In file included from /usr/include/c++/10/cassert:44, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33, from main.cpp:1: main.cpp: In function 'int main()': main.cpp:135:22: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 135 | assert(sol.size()==ans); | ~~~~~~~~~~^~~~~