Compilare: main.cpp: In function 'void solve1()': main.cpp:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for(i = 0; i < L[k].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'void solve2()': main.cpp:81:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(i = 0; i < L[w.nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~