Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:42:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(int &poz=last[x];poz<g[x].size();++poz) | ~~~^~~~~~~~~~~~ main.cpp: In function 'void dfs2(int, int)': main.cpp:59:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(int &poz=last[x];poz<g[x].size();++poz) | ~~~^~~~~~~~~~~~ main.cpp: In function 'int dfs(int, int)': main.cpp:40:5: warning: 'minFlow' may be used uninitialized in this function [-Wmaybe-uninitialized] 40 | if(!minFlow) return 0; | ^~