Compilare: main.cpp: In function 'void dfs(int)': main.cpp:13:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for(int i=0;i<graf[start].size();i++){ | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:52:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for(int j=0;j<solutie[i].size();j++){ | ~^~~~~~~~~~~~~~~~~~