Compilare: main.cpp: In function 'bool bfs(int, int)': main.cpp:27:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[u].size(); ++i) { ~^~~~~~~~~~~~ main.cpp: In function 'int detflow(int)': main.cpp:43:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[nr].size(); ++i) { ~^~~~~~~~~~~~~ main.cpp:41:9: warning: unused variable 'i' [-Wunused-variable] int i, flu, maxflow=0; ^ main.cpp: In function 'int main()': main.cpp:94:16: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] bfs(1, poz); ^