Compilare: main.cpp: In function 'bool Bf()': main.cpp:48:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[u].size(); ++i ) ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:91:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for( int i = sink; i != source; i = parent[i]) ^~~ main.cpp:94:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for (int i = sink; i != source; i = parent[i]) ^~~