Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:45:37: warning: comparison of integer expressions of different signedness: 'std::stack<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 45 | while(stk.size()>initialStkSize){ | ~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:105:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 105 | if(grad[i]<bicComp[i].size()){ | ~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:112:13: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 112 | for(auto[x,y]:ans){ | ^